Resize image
Change pixel size in px or %, lock the ratio, or use Instagram and WhatsApp presets. Files are deleted automatically after 24 hours.
Drop images here
You can also paste from the clipboard.
- JPG
- PNG
- WebP
- HEIC
- AVIF
Up to 10 files, 20 MB each.
Change width, height, or a social size
Set pixels, a percent, or a ready size for Instagram, WhatsApp, YouTube, and the rest. Lock the ratio, or let the frame crop.
'Whole photo' keeps everything. The result may be smaller than the frame. 'Fill the frame' hits the exact size and may crop edges.
How to resize
- Drop photos. The preview is the photo you will get.
- Pick a ready size or type width and height. Lock the ratio unless you want a stretch.
- Check each file you send. The same frame applies; the crop may differ.
- Process on the server, then download the files.
Upscaling does not invent detail
Making a 400 px image into 4000 px enlarges pixels. The page says so. For print, start from the largest original you have.
HEIC is decoded here and saved as JPEG. AVIF stays AVIF. Mixed HEIC plus JPEG in one drop is fine.
Tested examples
Download the input, use the settings below and compare the result. These are public synthetic files made by Tinolia, with no customer data.
Measured on
A static 320 × 320 PNG
Resize logo.png to 320 × 320 with the fill/crop option, rather than preserving the original 2:1 ratio.
| File and format | Dimensions / pages | Bytes |
|---|---|---|
| Inputlogo.png | 256 × 128 px | 2,738 |
| Outputsticker.png | 320 × 320 px | 11,271 |
Input
Output
The result is PNG, exactly 320 × 320 and below 512 KB. It keeps transparency. Resizing can crop the subject and cannot add original detail; check the whole sticker before uploading it.
Measurements apply to these files and settings, not to every upload. The engine version and processing environment can change the bytes. The public examples stay available; your uploads follow the 24-hour deletion policy.
Download the measurement record (JSON)Questions
Which Instagram size?
Feed square is 1080×1080, portrait 1080×1350, story 1080×1920. Ready sizes are labeled.
Keep aspect ratio?
Yes by default. Unlock only when you really want a different shape.
Can I resize by percent?
50% halves both sides. Useful when you do not care about a named social frame.
Then compress?
Resize first if the form names pixels, then Compress image if it also names bytes.
Can I resize several photos at once?
Same target on every photo, up to 10.
How large can each file be?
20 MB each. An image over 32 megapixels is refused when you add it. If the size you ask for is over 32 megapixels, the result is scaled down to fit.
Related tools
Related guides