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Uncrop
What it is
Uncrop is a free web tool for extending photos into Instagram-friendly layouts. It supports portrait 4:5, square 1:1, landscape 1.91:1, and Story/Reel 9:16 formats. Local expansion methods include edge pixel extrusion, symmetric reflection, ambient blur, and smooth smear, while background styles include blur, solid colors, gradients, and mirror reflections. Uploads can use JPG, JPEG, PNG, WEBP, or HEIC. Uncrop says processing occurs in the browser, photos are not transmitted or stored, and traces disappear when the tab closes or refreshes. Downloads retain the upload format, and original content is not compressed or downsized. There is no fixed file-size limit, although files over 50MB may take longer in the browser. The responsive tool works on modern smartphones and listed browsers, and can process and download offline after loading. All features are free without an account or sign-up.
For and against
For
- Supports four Instagram aspect ratios
- Accepts JPG, PNG, WEBP, and HEIC
- Photos stay in the browser
- Works offline after the page loads
- No account or sign-up required
Against
- Files over 50MB may process slowly
- Gemini AI outpainting requires a paid API key
- Free plan is supported by advertising
The verdict
Uncrop focuses on local photo expansion with several background and Instagram layout options. Its browser processing, broad format support, and offline capability make it practical for quick resizing without an account.
Who it suits
It suits social-media users who need to extend images into Instagram formats on phones or desktops. People concerned about uploads may appreciate browser processing and the stated lack of storage.
Plans and prices
Free
All features · no account or sign-up · supported by non-intrusive advertising
Read 7 Oct 2026 · uncrop.in
On the record
- Background styles
- The FAQ lists blur backgrounds, solid colors, gradient effects, and mirror reflections.uncrop.in · read 7 Oct 2026
- External API option
- The homepage says Gemini AI generative outpainting requires a paid Gemini API key.uncrop.in · read 7 Oct 2026
- File size
- The FAQ says there is no set file-size limit, though files over 50MB may take longer to process in the browser.uncrop.in · read 7 Oct 2026
- Image formats
- The FAQ says it supports JPG/JPEG, PNG, WEBP, and HEIC uploads.uncrop.in · read 7 Oct 2026
- Image retention
- The FAQ says photos are not stored and traces are removed when the tab is closed or refreshed.uncrop.in · read 7 Oct 2026
- Instagram formats
- It offers portrait (4:5), square (1:1), landscape (1.91:1), and Story/Reel (9:16) formats.uncrop.in · read 7 Oct 2026
- Local expansion
- The homepage lists edge pixel extrusion, symmetric reflection, ambient blur, and smooth smear as instant local expansion methods.uncrop.in · read 7 Oct 2026
- Mobile and browsers
- The FAQ says the responsive tool works on modern smartphones and lists Chrome, Safari, Firefox, Edge, and Samsung Internet.uncrop.in · read 7 Oct 2026
- Offline use
- The FAQ says photo processing and downloading can work offline after the page has loaded.uncrop.in · read 7 Oct 2026
- Privacy
- The FAQ says image processing happens in the browser and photos are not transmitted to a server.uncrop.in · read 7 Oct 2026
- Purpose
- Uncrop is an online tool for uncropping and extending photos for Instagram.uncrop.in · read 7 Oct 2026
- Quality and downloads
- The FAQ says the original content is not compressed or downsized and downloads retain the upload format at the highest quality setting.uncrop.in · read 7 Oct 2026
