Drop images here
or click to choose, paste from clipboard. JPEG, PNG, WebP, AVIF, GIF.
Compression settings
The image compressor without the 20-per-month limit
Drop unlimited images. We compress with JPEG, WebP, and AVIF in parallel, pick the smallest, and let you verify pixel-by-pixel with a built-in diff slider. Batch-zip download. Your images never leave the tab.
How it works
Drop, paste, or click
Drop any number of images, paste a screenshot, or click to select. JPEG, PNG, WebP, AVIF, GIF accepted.
Auto-pick the best format
We compress with JPEG, WebP, and AVIF in parallel and pick the smallest. You can also force one format if you have legacy browser concerns.
Download or zip
One image, hit download. Many images, get them all in a single zip with one click.
Every feature, free
Multi-encoder side-by-side
Compress with JPEG, WebP, and AVIF (when supported) at the same time. See file size + visual quality for each. Pick the winner manually or trust the auto-pick. Squoosh shows one format at a time. We show all four in one row.
Visual diff slider
Drag a clip-path slider to compare original vs compressed pixel-by-pixel. Spot lossy artifacts before you ship. No free competitor (TinyPNG, iLoveIMG, Optimizilla) ships an in-place pixel diff.
Batch + zip download
Drop dozens of images at once. Each is compressed in parallel. Click 'Download all as zip' for one file with every compressed image. TinyPNG caps free use at 20 images per month. We have no limit.
Auto-resize while compressing
Set Max dimension to the longest side. The tool scales by aspect ratio so you don't have to compute width and height. Resizing 4K images down to 1920 typically saves 80 percent before any encoder runs.
EXIF + GPS strip by default
Canvas-based re-encoding strips all metadata. EXIF, GPS coordinates, ICC profiles, camera info: all gone. Critical for privacy when posting personal photos.
Format conversion
JPG to PNG, PNG to WebP, WebP to AVIF, all combinations. Pick the format that fits your use case (transparency, animation, modern compression) without leaving the page.
Quality slider with live preview
Drag from 10 to 100. The candidate cards re-encode on every change so you can hunt the optimal quality / size tradeoff in real time.
100% browser-side
Native canvas encoders. No upload, no server, no log. Your images never leave the tab. Works offline after first page load.
Why we built this
Privacy that actually means something
Other 'free' compressors quietly upload your image to their server, run lossy encoding there, and keep a copy. Ours doesn't, because it can't. The tool is a bundle of JavaScript and the canvas API, that's it. Open the network tab, you'll see no requests.
No daily caps, no signup
Process unlimited images at any size. TinyPNG: 20 images per month, 5 MB max. Compressor.io: ad-supported with batch limits. iLoveIMG: 30 images max per batch. Ours: as many as your browser can hold.
Best-in-class auto-pick
Most tools force you to pick a format up front. Our Auto mode encodes with three encoders at the same time and picks the smallest result that meets your quality. Saves 10-30 percent over a fixed-format pick on most photos.
Visual QA built in
The diff slider lets you confirm there's no perceptible loss before you ship. No more 'looks fine in the thumbnail, breaks at full size' surprises after publishing.
Molixa vs TinyPNG, Squoosh
| Feature | Molixa Image Compressor | TinyPNG | Squoosh (Google) |
|---|---|---|---|
| Free tier | Unlimited, no signup | 20 images/month, 5 MB each | Unlimited (Google) |
| Batch upload | Yes, no count limit | 20 max | One image at a time |
| Multi-encoder side-by-side | Yes, JPEG + WebP + AVIF in parallel | No, one format auto-picked | No, manual format pick |
| Visual diff slider | Yes | No (separate panels) | Yes |
| Zip batch download | Yes, one click | Per-file or paid plan | No (one image) |
| EXIF strip | Default on | Yes | Yes |
| AVIF support | Yes, when browser supports | No | Yes |
| Privacy | 100% browser-side | Server-processed | 100% browser-side |
| Works offline | Yes, after first load | No | Yes |
What people use it for
Optimize blog post images
Drop the hero + inline images, set max dimension to 1600, get them all back in a zip. Page weight drops, Core Web Vitals improve.
Compress for OG / social cards
1200 by 630 sized OG images for social shares. Auto-pick decides between JPEG and WebP. Drag the diff to confirm no banding.
Reduce screenshots before sharing
Paste a screenshot from clipboard, compress to under 200 KB, drop into a Slack message or GitHub issue. No upload to a third-party screenshot service.
Strip EXIF before publishing photos
Trip photos contain GPS coordinates by default. EXIF strip is on by default here. Photos are clean to publish without revealing where they were taken.
Convert formats
PNG to WebP for the modern web, JPG to AVIF for max savings, WebP to PNG for legacy compatibility. All in the same tool.
Email attachments under the limit
Some clients still cap attachments at 25 MB. Drop a folder of photos, compress to 60 percent quality, get a zip under the limit.
Walkthroughs
Compress a batch of photos in 10 seconds
- 1Drop the folder onto the drop zone, or click and select multiple files.
- 2Each image starts compressing immediately with the default settings.
- 3When all are done, click 'Download all as zip' for a single file.
- 4Defaults: format Auto, quality 80, EXIF strip on, no resize.
Find the smallest format for a single image
- 1Drop one image. Wait for the green checkmark.
- 2Click the Layers icon to expand the comparison.
- 3See JPEG, WebP, and AVIF candidates side-by-side with file size and savings.
- 4The 'Best' badge marks the smallest. Click any other to download that format instead.
Verify there's no quality loss
- 1Compress an image at quality 80 (the default).
- 2Click the Layers icon to expand the comparison.
- 3Below the candidates, drag the diff slider left and right.
- 4The left side is the original, the right side is the compressed. Look for banding, blockiness, or color shifts.
Batch-resize before compressing
- 1Drop your images.
- 2Set Max dimension to your target longest side (eg 1920 for desktop hero, 1200 for OG, 800 for thumbnails).
- 3Quality stays at 80. The resize happens before encoding, so you get an extra 50-80 percent savings.
- 4Download or zip as usual.
Privacy + security
Your images never leave your browser
The tool uses native canvas encoders that ship with every modern browser. The image is loaded into a tab-local canvas, re-encoded, and delivered back to you. No upload. No server. No log. Open your browser's network tab and you'll see zero outbound requests.
EXIF, GPS coordinates, ICC color profiles, and other private metadata are stripped by default during re-encoding. Critical when uploading personal photos to a CMS or sharing screenshots that might contain sensitive context. Toggle the strip off if you specifically want to keep camera info.
Who it's built for
Web developers
Optimize hero images, OG cards, and inline content. Auto-pick the format your CDN should serve. Work in batches with the zip download.
Photographers + content creators
Strip EXIF + GPS before publishing. Use the diff slider to check that artistic detail survives the compression.
Anyone with screenshots
Paste a screenshot from clipboard, compress, drop into Slack or a GitHub issue. No third-party screenshot service in the loop.
Privacy-conscious people
If you wouldn't send your photo to a stranger's server, don't use a competitor that runs compression server-side. We don't have a server.
Questions people ask
Is the image compressor free?
Where do my images get sent?
What makes this different from TinyPNG?
Which format should I use?
Will I lose quality?
Can I batch-compress multiple images?
Does it strip EXIF / GPS data?
Can I resize while compressing?
Is there a file size limit?
How does it work offline?
Try it now
Compress unlimited images, multi-format auto-pick, pixel-level diff
Free. No signup. No 20-per-month cap. Drop a batch and download as zip.
Start compressingThe Image Compressor page is built, reviewed, and maintained by the Molixa team. We use the tool we ship and update the docs when the behavior changes.
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From the blog
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