Batch image resizer and compressor: JPEG, WebP, AVIF, metadata removed

Resize and compress photos

Runs entirely in your browser. Your photos are never uploaded.

1. Choose photos

Choose images or drop them here: JPEG, PNG, WebP, AVIF or GIF, as many as you like (HEIC opens in Safari only)

Or try it with a sample photo

Measured: what each quality setting costs

What this means in practice:

• For the web, WebP at quality 75 to 85 is the sensible default where the browser can make it. In our measurement it gave files about 21% smaller than JPEG at the same quality number. The two quality scales are not the same thing, so compare PSNR and SSIM in the table, not just the setting.

• JPEG is the safe choice for email and old software. Every program opens it.

• PNG is for screenshots, diagrams and images with sharp text, not photos: it is lossless, so photo files come out about 16 times larger than JPEG at quality 80.

• AVIF is available only in Safari among the browsers we tested (see below); elsewhere the option is off.

What the tool does to your photos

1. Reads the file and applies its orientation. Phones often store a photo sideways with an EXIF tag saying "rotate 90°". The tool rotates the pixels first, because the output will not carry that tag.
2. Resizes in steps. A single large reduction on a canvas can skip pixels and produce moiré on fine patterns (fabric, brick, foliage). The tool halves the image repeatedly with the browser's high-quality smoothing until it is within 2x of the target, then makes one final step to the exact size. It never enlarges unless you tick the box, and enlarging adds pixels, not detail.
3. Re-encodes with the browser's own encoder at the quality you chose. Quality numbers are not comparable between formats, and differ slightly between browsers, so the tool shows you the real size of the real file rather than a guess. Sizes in the batch table marked "est." are estimates from the photos already encoded (bytes per pixel), until you convert.
4. Fills transparency for JPEG. JPEG has no transparency, so transparent areas get the fill colour you choose (white by default). WebP, AVIF and PNG keep transparency.

Metadata: what is removed, and how you can check

A photo from a phone or camera usually carries more than pixels:

The output contains none of the personal fields. A canvas holds only pixels, so when the browser encodes it to a file it writes no camera, date, GPS, caption or edit-history data. The tool doesn't take that on trust: after encoding, it scans the output file's bytes with the same parser it uses on your original and tells you what it found.

We checked this in three browser engines with a test photo carrying GPS coordinates, a camera make and model, and a date (7 October 2026):

Chrome writes a standard sRGB colour profile into its files, and Safari's engine writes a small EXIF block holding the colour space and pixel size, and an empty IPTC header. Neither says anything about you, your camera or where the photo was taken.

Two side effects to know about:

• Colours are converted to sRGB. Photos from recent iPhones and many cameras are in a wider colour space (Display P3 or Adobe RGB). The browser converts them to sRGB when it draws them, and colours outside sRGB are clipped. On most screens and for most uses this is invisible; for print work keep your originals.
• Rotation is baked in, as described above, so the output looks right everywhere, including in software that ignores orientation tags.

What it does not remove: anything visible in the picture itself (faces, house numbers, a street sign), and any watermark. Check the image, not just the metadata.

Which browsers can make which format

The tool asks your browser on load which formats it can encode and turns off the ones it can't, with a note. What we found on 7 October 2026:

So WebP works in Chrome, Edge and Firefox, AVIF only in Safari, and JPEG and PNG everywhere. These are the browser engines Playwright ships, run on macOS; your browser's own version decides, which is why the tool checks at run time.

Limits

• iPhone and iPad: Safari refuses canvases above about 16.7 megapixels. The tool warns when a photo or its output is larger; choose a smaller size or use a desktop browser.
• HEIC photos open only in Safari. Elsewhere, change the iPhone camera setting to "Most Compatible" or convert the photos first.
• Animated GIFs become a single still frame.
• Very large batches are processed one photo at a time to keep memory down, so a hundred 12-megapixel photos take a minute or two.

Doing the same without a browser

If you prefer a command line, ImageMagick does the same job in one line. This resizes so the longest side is at most 2048 px, removes metadata and writes WebP at quality 80:

magick input.jpg -auto-orient -resize "2048x2048>" -strip -quality 80 output.webp

-auto-orient applies the rotation tag before -strip removes it, the same order this tool uses.

Privacy

Your photos are read by JavaScript in this page and never leave your device: there is no upload and no server processing. The page works offline once loaded. See the privacy page.

Also available as Markdown.