What is an image resizer?
An image resizer changes a picture's pixel dimensions — its width and height. You might shrink a large photo to fit a profile picture, match an exact social-media size, or crop to a printing standard. This resizer offers ready-made presets and custom sizes, with an aspect-ratio lock so images don't stretch — all processed locally in your browser.
How to resize an image
- Drop or select your image.
- Choose a preset (Instagram, YouTube, passport, …) or type a custom width and height.
- Keep Lock aspect ratio on to avoid stretching, then download.
Built-in presets
- Instagram Square 1080×1080, Portrait 1080×1350, Story/Reel 1080×1920
- YouTube Thumbnail 1280×720, X/Twitter 1600×900, Facebook Link 1200×630
- Passport photo 35×45 mm at 300 dpi (413×531)
Common uses
- Fit a photo to the exact size a social network or website expects.
- Make a profile picture or thumbnail from a larger image.
- Prepare a passport or ID photo at the right pixel size.
- Reduce a huge image to a sensible size before uploading.
Tips for best results
- Keep Lock aspect ratio on so the image never looks stretched.
- Resizing down keeps images sharp; enlarging a small image can look soft.
- Choose PNG to keep transparency, or JPG/WebP for smaller photo files.
Is it really private and free?
Yes. Resizing runs in your browser with the Canvas API, so your image stays on your device and is never uploaded. There is no sign-up, no watermark and no limit — the site is funded by ads.
FAQ
- Will resizing upload my image?
- No. Resizing runs in your browser; your file stays on your device.
- Why does my image look stretched?
- Turn on "Lock aspect ratio" so width and height scale together.
- Can I enlarge a small image?
- Yes, but enlarging adds no new detail, so it can look soft. Resizing down keeps the most quality.
- How do I crop to an exact size?
- Pick a preset or type a width and height; the tool fits your image to those dimensions.
- Does it keep transparency?
- Yes, if you save as PNG or WebP. JPG has no transparency and fills it with white.
- Is there a size or count limit?
- No limits — everything runs locally on your device.