Resize Image by Pixels
Set the precise pixel width and height you need and let the tool scale the image to match, keeping proportions in check and exporting locally — no upload required.
Best for precise pixel sizes. Example: resize to exactly 800×600.
Before you use: an exact size may change the aspect ratio unless you lock it.Best for: typing an exact width and height. Not ideal for: percentage scaling only.
- Upload the image.
- Type the exact width and height in pixels.
- Export at those precise dimensions.
Resize Image by Pixels is a browser-based image tool on ImgToolsBase. Set the precise pixel width and height you need and let the tool scale the image to match, keeping proportions in check and exporting locally — no upload required. To use it, upload or drop your image and view the result directly in your browser — no signup and nothing to install.
How this tool works
Pick a resize mode
Resize Image by Pixels supports exact width/height, max width, max height, percentage, and longest/shortest side. Max and percentage modes keep the aspect ratio automatically.
Aspect lock is two-way
With the lock on, editing either dimension recalculates the other so the image is never distorted. Turn it off for independent width and height.
Format and quality
Keep the input format or convert to JPG, PNG, or WebP. Quality applies to JPG and WebP only; PNG ignores it. JPG fills transparency with the background color.
Check the result panel
After processing, the panel shows the original dimensions, the final dimensions, the output format, and the new file size. Re-encoding removes EXIF metadata.
Resize Image by Pixels in your browser
Resize Image by Pixels changes the pixel dimensions of an image right in your browser. Pick exact width and height, a maximum width or height, a percentage, or a longest/shortest side, and the tool keeps the aspect ratio unless you turn the lock off.
Output can stay the same format as the input or convert to JPG, PNG, or WebP. The quality slider applies to JPG and WebP; PNG export ignores it in most browsers. When you choose JPG, any transparency is filled with the background color you pick, because JPG cannot store transparency.
Turn on “do not upscale” to make sure a small image is never enlarged past its original size, and check the result panel for the original and final dimensions and the new file size.
How to use Resize Image by Pixels
- Upload your image into Resize Image by Pixels — click the upload area, press Enter, or drag the file onto it.
- Choose a resize mode in Resize Image by Pixels, then set the width, height, or percentage. With the aspect lock on, editing one dimension updates the other.
- In Resize Image by Pixels, pick the output format — and the quality for JPG or WebP — plus a background color when you output JPG.
- Click Process, confirm the exact pixel dimensions in the result panel, and download the resized image.
Why use this tool
Resize Image by Pixels offers exact, max width, max height, percentage, and longest/shortest-side modes instead of a single fixed box.
Editing the width updates the height and editing the height updates the width, so the image never distorts.
Keep the original format or convert to JPG, PNG, or WebP, with an honest note that PNG ignores the quality slider.
Your image is processed in your browser with the HTML canvas and is never uploaded to a server.
Common uses for Resize Image by Pixels
Resize an image to the exact pixels or maximum dimension a site or form allows.
Scale a big camera or phone image down by percentage without enlarging it.
Set a max width so an image loads quickly while keeping its proportions.
Resize an image from a phone, tablet, or laptop browser with the file staying on the device.
Frequently asked questions
Are my files uploaded to a server by Resize Image by Pixels?
No. Resize Image by Pixels runs entirely in your browser using the HTML canvas. Your image is resized on your own device and is never sent to imgtoolsbase or any server.
Does Resize Image by Pixels keep the aspect ratio?
Yes — by default Resize Image by Pixels uses a two-way aspect lock: editing the width updates the height and editing the height updates the width. Turn the lock off to set width and height independently, which can stretch the result.
Which output formats does Resize Image by Pixels support?
Resize Image by Pixels can keep the same format as the input or convert to JPG, PNG, or WebP. The quality slider applies to JPG and WebP; PNG export ignores quality in most browsers.
Will Resize Image by Pixels enlarge a small image?
Only if you ask it to. Resize Image by Pixels enlarges past the original size only when you allow it, and because that softens the image you can turn on “do not upscale” to cap the result at the original size.
When Resize Image by Pixels saves JPG, what happens to transparency?
JPG cannot store transparency, so Resize Image by Pixels fills transparent areas with the background color you choose. Use PNG or WebP if you need to keep a transparent background.
Related image tools
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