Resize Image Online
Change the width and height of one picture or a whole batch. Enter pixels or a percentage, pick a preset such as 1080 × 1080, and download the results. Nothing is uploaded.
🔒 Runs in your browser. Your files and text are not uploaded.
How to use the Resize Image
- Drop one or more pictures on the box, or click it to choose files.
- Choose Pixels or Percent. In pixel mode, type a width, a height or both, or pick a Quick size such as “Story / Reel — 1080 × 1920”.
- If you entered both a width and a height, choose what happens when the shape differs: fill and crop, fit inside, fit with padding or stretch.
- Optionally choose an output format and a Max file size (KB), then check the result on each row.
- Download one file, or all as a ZIP.
Width only, height only, or both
If you type only a width, the height follows automatically so that the picture keeps its proportions; the same goes for height. This is the setting for “make it 800 pixels wide”. Enter both and the picture has to be forced into a box whose shape may differ from the original, which is where the four fit modes come in.
| Mode | What it does | Use it when |
|---|---|---|
| Fill and crop | Scales the picture until the box is full and trims the overflow | You need the exact size and a natural look, e.g. thumbnails and covers |
| Fit inside | Scales the whole picture to fit within the box; one side may come out smaller | You must not lose any part of the picture |
| Fit and pad | Fits the whole picture and fills the leftover space with the background colour | The size must be exact and nothing may be cut, e.g. a square listing photo |
| Stretch | Distorts the picture to fill the box | Rarely: only for graphics that tolerate distortion |
Common sizes
The Quick size menu covers the dimensions people ask for most often. They change from time to time as apps are redesigned, so treat them as sensible defaults and check the platform’s own help page if a precise size is mandatory.
| Preset | Pixels | Typical use |
|---|---|---|
| Square post | 1080 × 1080 | Instagram, Facebook and LinkedIn feed posts |
| Portrait post | 1080 × 1350 | Taller feed posts with more screen space |
| Story / Reel | 1080 × 1920 | Vertical full-screen formats, 9:16 |
| Full HD | 1920 × 1080 | Slides, desktop wallpapers and video frames |
| HD thumbnail | 1280 × 720 | Video thumbnails, 16:9 |
| Link preview | 1200 × 630 | The image shown when a link is shared (Open Graph) |
| Wide banner | 1500 × 500 | Profile banners with a 3:1 shape |
| Icon | 512 × 512 | App and site icons |
| Square ID photo | 600 × 600 | Digital 2 × 2 inch photos, such as US passport uploads |
Resizing without ruining quality
- Make pictures smaller, not bigger. Reducing pixels discards information and looks sharp; enlarging has to invent pixels, so a 400-pixel picture stretched to 1600 pixels will always look soft.
- Keep the proportions unless a form insists otherwise. “Fill and crop” gives exact sizes without distortion.
- Resize once, from the original. Repeated resizing and saving compounds JPEG losses.
- Think in pixels, not inches. Print size depends on pixels and dpi together; see DPI and print size explained for the maths.
Pixels, percent and file size
Percent mode is the quickest way to make something “half the size”: 50% halves the width and the height, so the picture has a quarter of the pixels and the file is typically three to four times smaller. If you need the file to stay under a number of kilobytes, set “Max file size (KB)”: the tool keeps your exact pixel size and lowers only the JPEG quality until it fits. If the target cannot be reached that way, it says so, and you can choose a smaller size or the size-target tools, which are allowed to shrink the pixels too.
Frequently asked questions
How do I resize an image without losing quality?
Reduce the size rather than enlarge it, keep the proportions and save as JPEG at quality 90 or above, or as PNG. Making a picture smaller keeps it sharp; making it larger cannot add detail.
How do I resize to an exact size such as 600 × 600?
Type 600 in both fields (or choose a preset) and pick “Fill and crop” to keep the proportions by trimming the overflow, or “Fit and pad” to keep the whole picture on a coloured background.
Can I resize many pictures at once?
Yes. Every picture you add is processed with the same settings; “Download all (ZIP)” collects them.
What is the maximum size?
Up to 16,000 pixels on a side, if your browser has enough memory. Very large sizes may fail on phones.
Are my pictures uploaded anywhere?
No. The resizing happens in your browser.