A practical workflow for file size limits

Write down three separate requirements

Record the accepted format, maximum file size and required width and height separately. A small WebP still fails a JPG-only form. A 200 KB landscape image still fails a 600 × 800 pixel requirement. This tool prepares a file; the receiving service makes the acceptance decision.

Pixel Workroom applies a maximum edge while keeping the original aspect ratio. It does not crop or add padding to produce an exact 600 × 800 image. If the aspect ratio differs, prepare the crop in your original editor before compressing.

How many bytes is 200 KB?

This tool uses 1 KB = 1,000 bytes. An operating system or receiving service may display sizes using 1,024-byte units. Result cards show both rounded KB and the exact byte count. Compare bytes when you are close to a limit.

Change one constraint at a time

Choose an accepted format, enter the byte target and set the maximum edge according to the required pixel dimensions. After conversion, check bytes and dimensions, then open both previews to read the small text. If the form rejects the file, identify whether its format, bytes or dimensions caused the mismatch.

Enable the option to keep dimensions for submissions where pixel size matters. An over-target result means the constraints could not be met together. Choose another permitted format or a larger permitted byte limit; changing a label does not make the file compliant.

Check each file in a batch

Images with different textures or text compress differently even under identical settings. Each file in a batch has its own target result. Downloads add -pixel to the name and do not overwrite the original through the tool. If the new file is larger, check whether the original already meets the requirement.

Use the two built-in samples if you do not want to select a personal file. Convert the detail and transparency samples with the same 100 KB limit and compare their dimensions and target status before applying the workflow to your own images.