⚡ Log in to remove all limits — unlimited files, unlimited size, no daily cap + resize, sharpen & multi-format export (guest: 50 files, 5MB, 100/day)
DRAG & DROP OR CLICK
JPG • PNG • WEBP • AVIF • TIFF • GIF • SVG
GUEST: MAX 5MB • UP TO 50 FILES
TIFF & GIF → auto-converted to PNG · SVG → minified
🔒 Private: Files stay on your device
No uploads — runs locally in your browser
Log in to unlock unlimited use — free, forever
Original format · Quality 82 · No resize
Keep transparent areas. Off: fill with background color
Shows a rough preview first, then sharpens as it loads
EXIF, IPTC, XMP and ICC profiles are always removed, because re-encoding an image drops them. Colors are converted to sRGB, so they look the same in every browser.
Image compression happens inside your browser with the Canvas API. Your photos are never sent to a server, never stored, and never seen by anyone but you.
Compress and convert between every major image format. Turn JPEG into WebP, PNG into AVIF, or keep the original format and just shrink the file.
Drop in dozens of images and optimize them in one click, then download the finished set as a single ZIP archive. Guests get 50 files per session, logged-in users have no cap.
Resize by long side, short side, megapixels or a fit box, always keeping the aspect ratio. Optional sharpening after downscale keeps small images crisp.
Hidden metadata is stripped and the encoder is retuned for the web. Pictures look the same on screen while file sizes typically fall by 40 to 80 percent.
Export the same image as JPEG, WebP and AVIF at once, ready for a responsive <picture> element with fallbacks. Available free once you log in.
ZipMyImages is a free online image compressor that does all the work on your own computer. Cloud tools upload each picture to a server first; here the file is read, re-encoded and saved without ever leaving the browser tab. Photographers, designers, developers and online shop owners use it to cut image file sizes before publishing.
JPEG, PNG, WebP, AVIF, GIF, TIFF and SVG are supported. Convert between formats, remove EXIF metadata, resize and rename in bulk, then download everything as one ZIP file.
Heavy images are the most common reason a page loads slowly. Largest Contentful Paint, one of Google's Core Web Vitals, is measured on your biggest image, so shrinking it moves the score directly. Compressing to WebP or AVIF before upload often cuts total page weight by 50 to 80 percent, which lifts PageSpeed Insights results, keeps visitors from leaving and helps rankings.
Preparing images here takes seconds: no upload queue, no bandwidth limit, no per-image fee. Drop the files in, compress, download the ZIP.
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| Feature | ZipMyImages | TinyPNG | Kraken.io | Squoosh |
|---|---|---|---|---|
| Files never uploaded (private) | ||||
| Batch processing | 20/mo free | 1 free/batch | ||
| Max file size (guest) | 5 MB | 5 MB | 1 MB | – |
| Max file size (logged in) | none | 75 MB | 32 MB | – |
| ZIP batch download | paid only | paid only | ||
| Format conversion | ||||
| Resize + sharpen | paid | |||
| Batch rename | ||||
| AVIF output | ||||
| Daily limit (logged in) | none | – | – | unlimited |
| Price | free | paid | paid | free only |
| Browser-based (no install) |
Based on public pricing pages · April 2026
Visually lossless compression drops redundant data your eyes cannot see and re-encodes the picture with settings tuned for the web. JPEG, PNG, WebP and AVIF files usually get 40 to 80 percent smaller with no visible difference. If you need a byte-exact result, pick the Lossless mode instead.
Your images never leave your device. TinyPNG and Kraken.io send every file to their servers and cap free use with size limits and monthly quotas. ZipMyImages compresses locally in your browser, so it starts instantly, works offline once the page is open, and puts no limit on how many files you run.
Drop your JPEG files in, set the output format to WebP and press START. The conversion runs in your browser and takes a few seconds, with nothing uploaded. At the same visual quality WebP is roughly 25 to 35 percent smaller than JPEG.
WebP is the safe default: about 25 to 35 percent smaller than JPEG and supported by every modern browser. AVIF goes further, up to 50 percent smaller than JPEG, with slightly weaker support on older devices. Serving WebP with a JPEG fallback covers almost every visitor, and both formats help your Core Web Vitals.
Yes, the whole tool is free. As a guest you can compress 50 files per session, up to 5 MB each and 100 files a day. A free account removes every limit: any number of files, any file size, no daily cap, plus bulk resize and multi-format export. Files stay in your browser either way.