Toolpit
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Toolpit
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Scale images to an exact size, in bulk.
No file to hand?(sample-shapes.png, sample-shapes.jpg · made-up data)
Your image preview will appear here.
Scale a photo to the exact width a form demands, or push a whole folder of product shots through the same size in one go. Lock the aspect ratio or set both edges, choose how the image fits, and take away a single file or a ZIP of the lot. There is no file-count limit, because there is no server charging us per upload.
Drop in one image or a whole folder of them.
Set a width, a height, an exact box or a percentage.
Resize and download the images, or take them all as a ZIP.
No. Toolpit does not upload your file for processing — the tool runs as code in this browser tab, works on the copy your browser opened, and forgets it when you close the tab. You can check this yourself: open your browser’s network panel and run the tool. You will see the page, its scripts and the ads on the site, and — when you save, if you are signed in — one small request that charges 10 tokens to your account. None of them carries your file, its name or anything read from it, because file processing stays on your device.
There is no limit. Batch tools elsewhere cap you at ten or twenty files because each one costs them an upload and a server round trip; here the work happens on your machine, so the only limit is its memory.
Shrinking is done in halving steps rather than one jump, which averages the pixels properly and avoids the crunchy, aliased look you get from a naive resize. Enlarging is a different matter — there is no new detail to add, which is why "never enlarge" is on by default.
They only apply in "Exact box" mode, where you have given both edges. "Fit inside" scales the whole picture to fit and then pads the leftover space with the background colour, so the file comes out at exactly the size you asked for with nothing cut off. "Fill & crop" scales until the box is covered and trims the overflow, so you get the exact size with no padding but lose the edges. "Stretch" forces both edges and distorts the picture. In the Width, Height and Percentage modes none of this applies: the proportions are kept, nothing is padded or cropped, and the result is simply whatever the ratio gives.
Because scaling a small picture up does not add detail — it just makes the existing pixels bigger and softer, and the result usually looks worse than the original did. Leaving that on means a batch of mixed sizes gets the large ones brought down without the small ones being inflated. If you genuinely need something larger, Image upscaler uses a model that reconstructs plausible detail rather than simply stretching.
Every one of these runs in your browser too — no upload, no watermark.