Best Image Optimization Plugins 2027 for WordPress: Ten Options Compared
best-of hub, checked 11 Nov 2026Hello my friend, the best image optimization plugins for WordPress are the ones that shrink your pictures, serve modern formats such as WebP, and fit your budget. This page compares ten of them, with every starting price read from the vendor’s own page or its WordPress.org listing today, so you can pick one and stop guessing.
// disclosure: I sell SEO services. No vendor pays for a place on this list. Scores are my editorial opinion, based on published information. I did not run hands-on tests for this page.
- ten plugins, one page
- vendor-stated prices, dated
- free options named first
// example data for a bakery site in Leeds. It shows the kind of saving to expect, not a measured result from any plugin below.
The Best Image Optimization Plugins in Three Picks
For most small WordPress sites my three picks are Imagify, ShortPixel and Smush. All three compress on upload, handle bulk jobs and have a way to start free or cheap.
Imagify
Imagify compresses, resizes and converts images to WebP and AVIF, and the WordPress.org page says conversion is included even in the free plan. The free tier gives 20MB a month, about 200 images. Paid plans start low, so the first bill is small.
ShortPixel
ShortPixel handles images and PDFs, converts to WebP and AVIF, and has a built-in CDN, a network of servers that delivers files from a location near the visitor. The plugin includes 100 free credits a month, and the extra credits stay cheap.
Smush
Smush has over a million installs and a plain screen. The free version compresses and lazy-loads. The Pro plans, from $50 a year for one site, add WebP and AVIF delivery, a CDN and full-size compression.
// prices are vendor-stated, checked 11 Nov 2026. The order is my opinion for small WordPress sites, not a lab result.
Notice what this does not say. It does not say “install four plugins.” Two image optimizers on one site fight each other and can double-process files. Pick one, set it once, and go back to your business. If you would sooner hand the whole job over, that is what my cheap SEO services are for.
All Ten Image Optimization Plugins, Ranked by Score
Here are the ten plugins in order, scored out of 20. The scores add up four criteria that matter on a small budget, and the next section explains each one.
// editorial opinion based on published information, checked 11 Nov 2026. Not hands-on test results. Ties are ordered by the Ease score, then by Formats.
A low place is not an insult. Converter for Media only converts formats, so it scores lower on breadth by design. If WebP delivery is the only gap on your site, it may be your number one.
How I Scored These Image Plugins
Each plugin gets 1 to 5 points on four criteria, for a maximum of 20. The scores are my editorial opinion, formed from published pricing, product and WordPress.org pages. They are not hands-on test results.
Value for Money
What does the cheapest useful plan cost, and how much work does it allow? A price I could not read today scores low here, because I will not guess.
Formats and Features
Compression, WebP, AVIF, resizing, lazy loading and a CDN. A plugin that covers most of them scores 5. A one-trick tool scores 1 or 2.
Easy for a Beginner
Could a busy owner finish setup in one sitting? Fewer settings and plainer words score higher. This is the most subjective score, and I admit it.
Try Before You Pay
A fully free plugin scores 5. A permanent free tier with a cap scores 4. A trial only scores 3. No stated free option scores 2.
// one rule sits above the scores: a plugin whose price I could not read is marked “not verified” and cannot enter the top three.
Why these four? Because they match what site owners ask me. Nobody asks which plugin has the cleverest algorithm. They ask what it costs, whether it does WebP, whether they will understand it and whether they can try it first. However, your weighting may differ, so feel free to re-add the numbers.
The Top Five Image Optimization Plugins Reviewed
Each card says what the plugin is, who it fits, when to skip it, the vendor-stated starting price and one flag to know before you sign up.
Imagify
Imagify is a plugin that compresses and resizes images, converts them to WebP and AVIF, and can back up your originals so you can restore them. It optimizes in bulk or automatically on upload. Its WordPress.org page lists over 900,000 installs.
The pricing page lists a free Starter plan with 20MB a month, roughly 200 images, and a 2MB limit per image. Growth lists 500MB a month, and Infinite lists unlimited images.
Who it fits: a small business owner who wants a simple, cheap tool. Skip it if: you upload many large photos, because the free plan refuses files over 2MB.
Price: Growth from $3.59/month on monthly billing, shown after a struck-through $5.99, vendor-stated, checked 11 Nov 2026. Free plan: $0.
One flag: the page advertises a Black Friday discount valid until 27 Nov 2026. So the lower figure is a promotion, and the struck-through price is what you may pay later.
ShortPixel
ShortPixel compresses images and PDFs, converts them to WebP and AVIF, and offers a built-in CDN plus AI-generated SEO filenames. The WordPress.org listing shows over 300,000 installs and version 6.6.1.
The plugin includes 100 free credits a month, where one credit is roughly one image optimization. Once you pass the quota, optimization pauses until you buy more credits or the month resets.
Who it fits: owners of image-heavy sites, such as a photographer in Toronto, who want formats and a CDN in one place. Skip it if: you want zero choices to make. There are more settings here than in Imagify.
Price: unlimited monthly credits for $9.99, and one-time packages from $19.99 that never expire, per the WordPress.org listing, checked 11 Nov 2026.
One flag: ShortPixel’s own pricing page showed no plan prices in the text I could read. The numbers above come from the WordPress.org listing, so confirm them at checkout.
Smush
Smush compresses images with lossless and lossy methods, lazy-loads them and resizes them to fit their containers. It lists over a million installs, and the latest changelog entry is dated 2 Nov 2026.
The free version skips images over 5MB and compresses resized versions by default. Full-size compression needs Pro. The WordPress.org page labels WebP and AVIF delivery as Pro, and it lists a CDN with 119 locations.
Who it fits: a first-time WordPress owner who wants a clear screen. Skip it if: you need WebP on a free plan. Other plugins here give it away.
Price: Smush Pro from $50/year for one site, $75 for three, $100 for ten, vendor-stated, checked 11 Nov 2026. A 30-day money-back guarantee is stated.
One flag: the vendor page shows 50GB of CDN in the plan tables and up to 500GB in the features text. Ask which figure applies to your plan.
EWWW Image Optimizer
EWWW compresses images on your own server, which means the work does not use a monthly quota. The WordPress.org page lists unlimited optimization, free WebP conversion, resizing and lazy loading, for over a million installs.
Local compression needs the PHP exec() function and server tools that some cheap hosts block. The paid plans move the work to the cloud and add the Easy IO CDN, where AVIF conversion is built in.
Who it fits: a technical owner on a host that allows server tools. Skip it if: you want AVIF without paying. The listing ties AVIF to the CDN.
Price: Standard $80/year ($8/month), Growth $160/year, Infinite $320/year, vendor-stated, checked 11 Nov 2026. Standard lists 50GB of bandwidth.
One flag: the plans page shows a trial button but no trial length and no refund terms. Ask before paying.
Optimole
Optimole optimizes images in the cloud and serves them through a CDN, which means your own server does almost no image work. Its WordPress.org page lists jQuery-free lazy loading, WebP and AVIF conversion and over 200,000 installs.
It counts visits, not images. The free plan covers up to 2,000 visits a month with unlimited optimizations. The pricing page lists Starter at 48,000 visits, Business at 120,000 and Flexible at 300,000.
Who it fits: a small shop that wants set-and-forget delivery. Skip it if: your traffic is high, because visits drive the plan size.
Price: not verified. The pricing page showed visit limits but no prices in the text I could read on 11 Nov 2026. It does state a 7-day money-back guarantee.
One flag: WordPress.org says paid plans start at 40,000 visits, while the vendor page says 48,000. That gap is why the price stays unverified.
// every number in these cards comes from the vendor’s own page or its WordPress.org listing, read on 11 Nov 2026. The “who it fits” lines are my opinion.
Five Specialist and Free Image Plugins
These five are narrower or cheaper. Several are free and do one job well, so they can be the smarter buy when you only need one thing.
TinyPNG (Compress JPEG and PNG Images)
The TinyPNG plugin compresses JPEG, PNG and WebP images and can convert to WebP and AVIF. You can run it on upload, in bulk, or one image at a time from the Media Library. The listing shows over 100,000 installs.
You get 500 credits a month free. In a standard WordPress install that is roughly 100 images, because WordPress makes several sizes of each upload and each size spends a credit. With format conversion on, expect about 50.
Who it fits: a blogger who publishes a few posts a month. Skip it if: you run a store with thousands of product photos.
Price: free to 500 compressions a month, then $0.009 each up to 10,000 and $0.002 beyond, per TinyPNG’s API pricing page, checked 11 Nov 2026.
One flag: credits disappear faster than photos do. Count thumbnails before you decide.
Robin Image Optimizer
Robin compresses new uploads automatically, optimizes your existing Media Library in bulk and converts JPG and PNG to WebP. It has four modes: Lossless, Lossy, High and Custom. The listing shows over 100,000 installs.
The free version states no limit on the number of images. Pro adds AVIF, a PageSpeed compression mode, background optimization, custom folders and WP-CLI commands, which is a command-line tool for developers.
Who it fits: an owner who wants free, unlimited WebP. Skip it if: you need AVIF or a CDN on a free plan.
Price: free version; Pro price not verified, because the WordPress.org page listed no figure.
One flag: GIFs are compressed but not converted. If you use animated GIFs, check the result.
Converter for Media
Converter for Media converts JPEG, PNG and GIF images to WebP and keeps your originals untouched in a separate folder. It converts new uploads automatically and the whole library in bulk. The listing shows over 500,000 installs and version 6.7.2, dated 5 Nov 2026.
Browsers that cannot show WebP get the original file. The page says AVIF output is a PRO feature.
Who it fits: a site that already compresses images and only needs next-generation formats. Skip it if: you want one tool that also shrinks the originals.
Price: free for WebP; PRO price not verified, because the listing gave none.
One flag: it converts, it does not describe itself as a compressor. Pair it with a separate tool if file size is your problem, and do not run two converters.
reSmush.it
reSmush.it sends your JPG, PNG and GIF files to a free online service that shrinks them. It can optimize existing images in bulk and new uploads automatically. The listing shows over 100,000 installs.
Images must be 5MB or smaller, and the FAQ answers “Is it free?” with “Yes! Absolutely free.” The FAQ also says a WebP offer is in development and “will be coming soon.”
Who it fits: a hobby site that needs basic compression and nothing else. Skip it if: you want WebP now. The page does not say the plugin supports it.
Price: free, per its WordPress.org listing, checked 11 Nov 2026.
One flag: the latest release, 1.0.6, is dated 16 June 2026. That is quieter than the rest of this list, so check the support forum before you rely on it.
WP Compress
WP Compress is a speed plugin with image compression inside it. The WordPress.org page lists caching, CSS and JavaScript optimization, image compression and an optional CDN, and says the essential performance suite is free. It shows over 9,000 installs.
WebP generation sits under its paid optimization engine. AVIF appears only in the changelog, under version 7.10.01.
Who it fits: an owner who would sooner use one plugin for speed and images. Skip it if: you already run a caching plugin, because two will clash.
Price: not verified. The page gave no prices and no free limits, so I list no figure.
One flag: no numbers means no top-three place, whatever the score. Read its plans page before you compare it with the rest.
// every number in these cards comes from the vendor’s own page, TinyPNG’s API pricing page or a WordPress.org listing, read on 11 Nov 2026. The “who it fits” lines are my opinion.
Image Plugin Comparison Table: Free Limits, Formats and Prices
This table puts the four plugins I rank highest next to each other. The highlighted column is my top pick for a small WordPress site.
| Imagify | ShortPixel | Smush | EWWW | |
|---|---|---|---|---|
| Free option | 20MB a month, about 200 images | 100 credits a month | free version, skips images over 5MB | unlimited local compression |
| Entry paid price | $3.59/mo promo, $5.99 struck through | $9.99 unlimited monthly credits | Pro from $50/year, 1 site | $8/mo, or $80/year |
| WebP and AVIF | both, in all plans | both | both, labelled Pro | WebP free, AVIF via CDN |
| CDN | not stated | built in | 119 locations, Pro | Easy IO, 50GB on Standard |
| Refund terms stated | not shown | not shown | 30-day money-back | not shown |
| Best for (my opinion) | simple start | formats plus CDN | clear screens | no monthly quota |
// all figures vendor-stated or from WordPress.org listings, checked 11 Nov 2026. “Not shown” means I could not read it. The last row is opinion.
Read the table by row, not by column. First find the row that matches your worry. If it is cost, check the free option row. If it is speed, check the formats and CDN rows. Then look at refunds, because three of the four did not state any on the pages I read.
What Image Optimization Plugins Cost, From Free Upward
Three plugins here are free to use, and the paid entry plans run from about $3.59 to $9.99 a month. The ladder below sorts them from cheapest, using each vendor’s stated starting price.
// vendor-stated, checked 11 Nov 2026. Smush is billed yearly; by my arithmetic $50 a year is about $4.17 a month. Imagify prices are promotional until 27 Nov 2026. TinyPNG is pay per use after 500 free compressions. Optimole and WP Compress are left off because their prices are not verified.
Look at how tight the range is. Every paid entry plan here costs less than a sandwich lunch for two. So price should rarely decide this choice. Free limits, formats and how much setup you can stand matter more.
Also watch the promotion trap. A struck-through price beside a countdown is the oldest trick in software retail, and the industry still treats it as news. Check the full price before you pay, then decide again.
How Image Optimization Plugins Work, Step by Step
A plugin compresses each image, converts it to a modern format, and serves the lighter file to the visitor. The pipeline below shows the five stops, and where a CDN and your own checks fit.
Upload a Photo
into the Media Library
Compress
strip bytes, keep the look
Convert
WebP or AVIF copy
Resize
right width per screen
Deliver
from your server or a CDN
Check
LCP in PageSpeed Insights
// a generic pipeline, not any single vendor’s design. Which steps run locally and which in the cloud differs by plugin.
Why Modern Formats Matter
Google’s web.dev says AVIF and WebP can deliver higher quality at far smaller file sizes than older formats. However, support arrived in stages. web.dev says AVIF has been supported in Chrome and Opera since 2020, Firefox in 2021 and Safari in 2022. A browser that cannot read a format discards it without showing anything. So a good plugin always keeps a fallback file.
Do Not Lazy-Load the Main Image
Lazy loading delays an image until it is near the screen. That is great for the footer and bad for the hero. web.dev says to never lazy-load your Largest Contentful Paint image, the biggest element visible when the page loads, and to set fetchpriority=”high” on it. Google’s target is an LCP of 2.5 seconds or less for at least 75% of page visits. For example, a dentist in Toronto with a big banner photo should exclude that banner from lazy loading in the plugin settings.
For the wider speed picture, my technical SEO page explains how images, caching and crawling fit together, and my best SEO tools list covers the free checkers.
Six Duels Between Image Plugins
Most people are stuck between two names, not ten. Here are six pairs with a plain verdict. The verdicts are opinion; the numbers are vendor-stated and were checked on 11 Nov 2026.
Imagify or ShortPixel
Imagify lists 20MB free and WebP plus AVIF in every plan. ShortPixel lists 100 free credits, a built-in CDN and PDF support. Pick Imagify for simplicity and ShortPixel when you want the CDN.
Smush or EWWW
Smush is the friendlier screen; WebP and AVIF are Pro. EWWW does free unlimited local compression and free WebP, but needs a host that allows server tools. Pick Smush on shared hosting, EWWW when your host is flexible.
Optimole or ShortPixel
Optimole counts visits and serves everything from a CDN. ShortPixel counts credits per image. Busy sites with few images suit ShortPixel. Quiet sites with many images suit Optimole.
TinyPNG or reSmush.it
TinyPNG gives 500 free credits and then charges per compression. reSmush.it is free with a 5MB cap and no WebP yet. For a blog with few posts, either works. For anything larger, neither is my first choice.
Robin or Converter for Media
Robin compresses and converts to WebP in one free plugin. Converter for Media only converts. If you have no compressor, Robin is the simpler pick. If you do, add the converter.
Free Plugin or Paid Plan
A free tier covers a small site for months. Pay when you hit a cap, need AVIF or want a CDN. Until then a subscription is a donation with a receipt.
// verdicts are editorial opinion from published information. I did not run these plugins against each other.
How to Choose an Image Optimization Plugin in Five Steps
Pick the problem first, the budget second and the brand last. Follow these steps in order and you will end with one plugin.
Step 1: Measure the Problem
Run your three busiest pages through PageSpeed Insights and note the LCP. If it is already under 2.5 seconds, you may not need a plugin at all.
Step 2: Count Your Images
Check how many files sit in the Media Library. Remember that WordPress makes several sizes of each upload, which matters for credit-based plans.
Step 3: Check Your Host
Ask your host whether the PHP exec() function is allowed. If not, skip local-only tools such as EWWW’s free mode and pick a cloud plugin.
Step 4: Start on the Free Tier
Install one plugin, enable backups of originals, and optimize ten images first. Compare the result by eye on a phone.
Step 5: Pay Only at a Limit
Upgrade when you hit a cap you actually care about. Then pay monthly for a month before switching to yearly billing.
// the steps are my suggestion, not a rule.
Six Common Mistakes With Image Optimization Plugins
The usual mistake is installing before measuring. Here are six I see often, each with the fix.
Lazy-Loading the Hero Image
It delays the biggest thing on the screen. Fix: exclude the first image from lazy loading and test again.
Running Two Optimizers
They process the same files and can undo each other. Fix: keep one, and deactivate the other before bulk jobs.
Uploading Giant Originals
A camera file is far bigger than any screen needs. Fix: resize before upload, or set a maximum size in the plugin.
No Backup of Originals
Lossy compression cannot be undone. Fix: turn on the plugin’s backup option, or keep your own copies.
Ignoring Thumbnails in Credits
One photo becomes several files. Fix: read how the plan counts, per image or per size.
Never Checking the Result
A green plugin screen proves little. Fix: retest in PageSpeed Insights and view the page on a phone.
// these are my observations from site work, not survey data.
One more thing, said gently. A plugin shrinks files. It does not fix a slow host or a heavy theme. If scores stay poor, a one-off SEO audit service or my WordPress SEO services can find the real cause.
Limits of This Image Plugin Comparison
This comparison is built from published pages read on one day. It is not a hands-on test, and several things can change after the date at the bottom.
Gaps in the Evidence
- Optimole and WP Compress: prices not verified, so neither can rank in the top three
- ShortPixel: its pricing page showed no figures; prices come from the WordPress.org listing
- Robin and Converter for Media: Pro prices not shown on their listings
- Imagify, ShortPixel and EWWW: refund terms not shown on the pages I read
How to Use It Safely
- Treat the scores as one person’s opinion from published information
- Check the vendor’s page yourself before paying; prices change
- Taxes and currency differ by country and are not included
- Test with a few images on your own site; your result beats my table
// compression quality, speed and real file savings were not measured. I make no claim about them.
Best Image Optimization Plugins: Questions and Answers
Short answers to what WordPress owners ask before they install one.
What is the best image optimization plugin for WordPress?
For most small sites I would start with Imagify, then ShortPixel or Smush. Imagify has a free plan and lists WebP and AVIF in every plan. ShortPixel adds a built-in CDN. Smush has the clearest screens. This is my opinion from published pages, not a test.
Are there free image optimization plugins?
Yes. Imagify, ShortPixel, TinyPNG and Smush have free tiers with limits. EWWW offers unlimited local compression, Robin lists no image limit, and reSmush.it is free with a 5MB file cap.
Should I use WebP or AVIF?
Use both if your plugin offers them, with a fallback. web.dev says AVIF and WebP give far smaller files than older formats, and that AVIF has had support in Chrome and Opera since 2020, Firefox in 2021 and Safari in 2022.
Does lazy loading hurt my speed score?
It can, for the main image. web.dev says to never lazy-load your LCP image. Lazy-load images lower on the page, and keep the first big image out of it.
Can I run two image optimization plugins?
I would not. Two plugins can process the same files and clash. Choose one, and add a separate converter only if the first one lacks WebP.
How much do image optimization plugins cost?
From free to about $9.99 a month for the entry plans here. Vendor-stated on 11 Nov 2026: Imagify from $3.59 (promotion), Smush Pro from $50 a year, EWWW from $8 a month and ShortPixel unlimited monthly credits for $9.99.
Will image optimization improve my Google rankings?
I cannot promise that, and nobody honestly can. Smaller images can help your pages load faster, and web.dev sets a 2.5 second LCP target. Treat the plugin as speed work, not a ranking guarantee.
Are the scores on this page based on testing?
No. The scores are my editorial opinion, based on each vendor’s published pages, checked on 11 Nov 2026. I did not run hands-on tests, and no vendor paid to be included.
Not Sure Which One? Send Me Your URL.
Tell me your site on WhatsApp. I’ll tell you whether images are really your speed problem, and which plugin I’d look at first.
// disclosure, again: I sell SEO services. No vendor pays for a place on this list. If you want a free first look at your own pages, try the free SEO checker.
Sources and Last Check
Official Google documentation comes first, then each vendor’s own page or WordPress.org listing. Vendor pages are named, not linked.
- web.dev: Optimize Largest Contentful Paint (2.5 second target, never lazy-load the LCP image, fetchpriority)
- web.dev Learn Images: AVIF (file size and browser support dates)
- Imagify pricing page, imagify.io/pricing, and WordPress.org plugin page (free plan, promotion, formats)
- ShortPixel pricing page and WordPress.org plugin page (credits, prices from the listing)
- WPMU DEV Smush Pro page and WordPress.org plugin page (Pro plans, free limits)
- EWWW plans page, ewww.io/plans, and WordPress.org plugin page (plans, local compression)
- Optimole pricing page and WordPress.org plugin page (visit limits, guarantee; price not verified)
- TinyPNG API pricing page and WordPress.org plugin page (free credits, per-compression price)
- WordPress.org plugin pages for Robin Image Optimizer, Converter for Media, reSmush.it and WP Compress
// last checked 11 Nov 2026. Prices are vendor-stated and can change. Scores and verdicts are editorial opinion.