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Gamut
One image in, every size out. Nothing leaves your browser.
Crop one image into multiple exact sizes at once, then export them all together. Runs entirely in your browser — no upload, no sign-up, no watermark. Set up your size templates once — 1600×1600 for a listing, 1080×1920 for a story — then drop in one image and export all of them at once. Runs entirely in your browser: no upload, no sign-up, no watermark. Give a template a max file size in KB and it finds the quality that fits.
Hey Product Hunt 👋
I kept doing the same thing by hand: one product photo, then crop it to
1600×1600 for the listing, 1080×1350 for the feed, 1080×1920 for a story.
Every image, every time. The tools I found either do one size at a time, or
want an upload and an account first.
Gamut is the version I wanted. You set your sizes up once as templates, drop
in a single image, frame each crop, and export all of them in one click as a
zip. Templates persist, so the second image takes about ten seconds.
Two things I care about more than I probably should:
**Nothing is uploaded.** Decoding, cropping and encoding all run in your
browser. There is no backend that could store an image even if I wanted it
to. Close the tab and nothing is left behind.
**HDR survives.** Every browser-based cropper I tried goes through canvas,
which quietly flattens a 10-bit HDR photo to 8-bit SDR. Gamut decodes HDR
AVIF with wasm, resamples in 16-bit, re-encodes to 10-bit and writes the
original colour tags back. Shoot HDR on a phone, crop it, and it's still HDR.
Also handy if you sell somewhere with a file size cap: give a template a max
in KB and it searches for the highest quality that fits, instead of making
you guess at a quality slider.
What it doesn't do yet: one source image at a time — the batching is across
sizes, not across files — and the HDR path only covers AVIF in → AVIF out.
Both are on the list.
Free, no account, no watermark.
I'd love to know which size templates you'd set up first. That tells me more
about what to build next than anything else.
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About Gamut on Product Hunt
“One image in, every size out. Nothing leaves your browser.”
Gamut was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #27 on the daily leaderboard. Crop one image into multiple exact sizes at once, then export them all together. Runs entirely in your browser — no upload, no sign-up, no watermark. Set up your size templates once — 1600×1600 for a listing, 1080×1920 for a story — then drop in one image and export all of them at once. Runs entirely in your browser: no upload, no sign-up, no watermark. Give a template a max file size in KB and it finds the quality that fits.
Gamut was featured in Design Tools (261.9k followers), Photography (143.2k followers) and E-Commerce (41.8k followers) on Product Hunt. Together, these topics include over 72.3k products, making this a competitive space to launch in.
Who hunted Gamut?
Gamut was hunted by Yiyu. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Gamut stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
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