Will entering dimensions always crop the picture?
No. Fit inside keeps the entire picture with padding. Fill frame crops as needed to cover the rectangle, while Stretch distorts the proportions.
Image WORKBENCH / FREE BROWSER TOOL
Resize an image by exact pixel dimensions
Enter a pixel width and height, keep the complete picture with padding or choose a crop, and inspect the actual exported dimensions.
No signup · File contents stay on this device Files are processed on this device
Drop your files here
JPG, PNG, WebP, AVIF or HEIC images · files stay on your device
or paste an image with Ctrl / Cmd + VUp to 30 files · 20 MiB per file · 80 MiB total
Sequential processing keeps memory use lower.
Processing happens in your browser. File contents are not uploaded. Close the tab to release active files; temporary handoffs use local browser storage. · Privacy details
IMAGE → DOCUMENT WORKFLOW
Sample checks you can repeat
Measured with the listed sample and settings; these may differ from this page’s starting preset. Timings are individual processing-function runs in the stated environment and exclude page loading. Library caches may be warm. These small-file checks do not establish performance or compatibility for every document.
| Sample | Settings | Observed output | Environment |
|---|---|---|---|
| sample-detail.jpg (1800 × 1200; 446,566 bytes); sample-transparent.png (1600 × 1000; 43,511 bytes) ↗ | 1200 × 800 px; contain; JPG; no enlargement | approximately 123.1 KB; 1200 × 800 · 0.05 sec | approximately 63.1 KB; 1200 × 800 · 0.03 sec | Chrome · Apple M2 / macOS · 15 Oct 2026 · local test |
Specific tasks
Using this tool
How to use resize by pixels
- Select a source image and enter the required pixel width and height; this page starts at 1200 × 800.
- Choose Fit inside, Fill frame or Stretch based on whether the whole picture, a full frame or exact distorted proportions are acceptable.
- Run the resize and compare the output dimensions with the receiving form before downloading.
Before you start
What to keep in mind
- Fit inside keeps the chosen canvas size and adds padding. With enlargement prevention on, Fill frame or Stretch may produce a smaller canvas for a small source.
- Cover can remove content near the edges; Stretch can distort faces, circles, and text.
- Enlarging an image does not recreate the detail of a higher-resolution original.
- Use at most 30 images, 20 MiB per file and 80 MiB total input. Combined output is also limited to 80 MiB; completed files remain available when a later result exceeds that limit. Each image must stay within 24 million pixels and 12,000 pixels on either side.
Interpret exact dimensions as a canvas requirement
A destination asking for 1200 × 800 pixels is describing a rectangle with a 3:2 ratio. A 1600 × 900 source has a different ratio. Fit inside can produce the requested canvas while leaving padding, Fill frame may crop the top and bottom, and Stretch changes the relative scale of the two axes. Decide which of those changes the task permits before treating the output dimensions as correct.
This preset opens in pixel mode with 1200 × 800 entered. It is useful for forms, page illustrations and fixed-size placeholders with known dimensions. Enter both numbers exactly and inspect the exported result. With no-upscale enabled, the tool avoids enlarging the foreground image; depending on the fit choice, a small source can remain small inside padding or lead to a smaller output frame. Pixel dimensions do not specify print centimeters or ensure a high-quality enlargement. If the requirement is a proportional reduction such as half size, use the percentage tool so each input keeps its own ratio. Keep one original master for any later, larger version.
Read width and height as an ordered pair
A 1200 × 800 image is not interchangeable with an 800 × 1200 image. The first number controls the horizontal edge and the second the vertical edge. With Fit inside, the engine centers the complete source inside that ordered rectangle. Fill frame uses the same requested ratio but can remove the outside of the picture.
Check the actual dimensions after export, particularly when enlargement prevention is enabled. A small source can make the cover or stretch result smaller than the requested canvas. This is not a print-resolution or DPI editor, and entering larger numbers does not recover missing source detail. If a receiving form also specifies a byte cap, evaluate that separately after the required pixel pair has been checked.
Common questions
About resize by pixels
Why is a small source not filling the target?
No-upscale prevents enlargement of the foreground. A small image can remain inside a larger padded canvas, or a fit mode may produce a smaller frame.
Does 1200 × 800 specify a physical print size?
No. Those values are pixels. Physical print dimensions depend on the document or printer resolution and scaling settings.
Is resizing performed on a server?
No. The browser calculates the geometry and creates the output locally. The page itself still loads from the website, and source or output size can exceed the browser’s practical memory limits.
Can I compress the resized result without selecting it again?
Yes. A next-step action can transfer the successful result through temporary local browser storage. Verify the final dimensions afterward because target-size compression can reduce them further.