The Best Smush Alternative for WordPress Image SEO

Facts checked against WordPress.org and each vendor’s pricing page on 25 September 2026.

Quick answer: if you’re leaving Smush because WebP and AVIF are Pro-only, the closest free swaps are Imagify (WebP and AVIF on the free plan, up to 20 MB a month) and EWWW Image Optimizer (free WebP and unlimited compression on your own server). Optimole fits if you’d rather have a CDN priced by traffic. If your images already load fast and what’s missing is alt text and descriptive file names, you don’t need to replace Smush at all: add ImageSEO next to it.

People look for a Smush alternative for two very different reasons. Some want a different compression plugin — usually because WebP and AVIF sit behind Smush Pro. Others have fast images already and realise what’s missing is image SEO: alt text, descriptive file names and social previews, which Smush doesn’t do at all. This guide covers both, with honest pointers to tools that aren’t ours.

First, decide what you actually want to replace

Why people move away from Smush

Smush itself is a well-rated plugin: more than 1 million active installs and a 4.8/5 score from over 6,000 ratings on WordPress.org. The usual reasons for switching aren’t about quality:

• Next-gen formats cost extra. In Smush, WebP and AVIF conversion are Pro features. Some competitors include them for free.
• The CDN is also Pro. If you want images served from a CDN without paying, other plugins package that differently.
• No image SEO. Smush’s listing has no alt text, captions, titles or file renaming. Compressing an image doesn’t describe it.

Smush alternatives compared

Ratings are each plugin’s WordPress.org score converted to stars. Prices are the entry paid plans shown on each vendor’s pricing page in September 2026 — check before you buy, as these change often.

If you want another compression plugin

Imagify — for free WebP and AVIF

Imagify (by WP Media) includes WebP and AVIF conversion in every plan, including the free one. The catch is the free quota: 20 MB of images per month, which Imagify estimates at about 200 images, with a 2 MB maximum per image. Good for small sites; larger libraries will need the paid Growth or Infinite plan. We compare it in detail in ImageSEO vs Imagify.

EWWW Image Optimizer — for unlimited free, on your own server

EWWW’s free version optimizes unlimited images locally on your server (lossless by default) and can create WebP versions. Images don’t leave your server for compression in local mode, which some site owners prefer. AVIF and the Easy IO CDN come with the paid plans. See ImageSEO vs EWWW.

Optimole — if you want a CDN and pay by traffic

Optimole optimizes images in the cloud and serves them from a CloudFront CDN with 450+ locations, converting to WebP or AVIF per visitor. Pricing is based on monthly visits rather than images: the free plan covers up to 2,000 visits a month. Details in ImageSEO vs Optimole.

ShortPixel — compression plus AI alt text

ShortPixel is the one alternative that now overlaps with image SEO: alongside compression and WebP/AVIF, it can generate alt text, captions, titles and descriptions with AI, in bulk and in 100+ languages, using separate AI credits. If you want a single plugin for both jobs, it’s worth a look. We compare it honestly in ImageSEO vs ShortPixel.

If what you’re missing is image SEO: keep Smush, add ImageSEO

Many people searching for a Smush alternative don’t actually have a speed problem. Their images are compressed; they just don’t rank or aren’t accessible, because the text around them is empty. That’s the gap ImageSEO fills, and it doesn’t require removing Smush.

• AI alt text for every image, on upload and in bulk for the existing library.
• Descriptive file names instead of IMG_4821.jpg.
• Titles and captions filled in automatically.
• Open Graph social cards for pages and posts.
• WooCommerce and gallery plugins such as NextGEN and FooGallery are supported.

Why it matters: Google’s image documentation names alt text as the most important image attribute. In our 2026 crawl of the 10,000 most-visited homepages, 37.1% of sites shipped at least one image with no alt attribute and only 46.4% of images had a descriptive file name — speed alone doesn’t close that gap.

Five questions to ask before you pick any image plugin

1. How is the quota counted? The models are very different: Imagify counts megabytes, ShortPixel counts credits (images), Optimole counts monthly visits, Smush Pro and EWWW’s plans are per site or per plan, and ImageSEO counts images processed by its AI. Estimate your library size and monthly uploads before comparing prices.
2. Where does processing happen? EWWW can optimize locally on your server; most others send images to their cloud. If data location matters to you, check each vendor’s documentation.
3. Can you undo it? ShortPixel, for example, keeps local backups of originals that can be restored. Know how you’d roll back before running a bulk job on thousands of images.
4. How are WebP/AVIF files delivered? Some plugins rewrite your HTML, some use server rules, some serve through a CDN. Make sure the method works with your host, cache and theme.
5. Does it cover the text side? Compression makes images light; it doesn’t write alt text or fix file names. Decide whether you want one plugin for both (ShortPixel) or a dedicated SEO tool alongside your compressor (ImageSEO).

How to switch from Smush safely

If you do replace Smush with another compressor:

1. Back up your site and wp-content/uploads first.
2. Don’t run two compressors at once. Deactivate Smush before bulk-optimizing with the new plugin, so images aren’t processed twice.
3. Check lazy load. If you relied on Smush’s lazy load, turn on the equivalent in the new plugin (or use WordPress’s native lazy loading) so it isn’t lost.
4. Check your WebP delivery. If Smush Pro was serving WebP, confirm the new plugin serves next-gen formats before removing Smush.
5. Test key pages in PageSpeed Insights before and after.

Adding ImageSEO alongside any of these plugins needs none of those steps: it writes text and names, and doesn’t touch compression settings.

Frequently Asked Questions

What is the best free alternative to Smush?

It depends on what you need for free. EWWW offers unlimited local optimization; Imagify includes WebP and AVIF but limits you to 20 MB a month; Optimole is free up to 2,000 visits a month. None of them write alt text for free at scale.

Can I keep Smush and add ImageSEO?

Yes. Smush handles compression; ImageSEO handles alt text, titles, captions, file names and social cards. They don’t overlap. See the full ImageSEO vs Smush comparison.

Does ImageSEO replace Smush?

No. ImageSEO doesn’t compress images or convert them to WebP. If you need compression, keep Smush or choose one of the alternatives above, and use ImageSEO for the SEO layer.

Which Smush alternative has AI alt text?

Of the compression plugins compared here, ShortPixel is the one with AI alt text built in. ImageSEO is dedicated to image SEO and also renames files and creates social cards.

Is ImageSEO free like Smush?

ImageSEO has a free plan with 10 images per month and no credit card; paid plans start at €4.99 a month for 100 images. See pricing for details.