Image requirement guide
When a form rejects an image because it is too large, the useful answer is not a mystery slider. Aftermath shows the final byte count, tells you what passed, and keeps the file on your device.
Upload fields usually compare the final file bytes, not the quality percentage shown by an editor. Aftermath encodes the image in your browser, measures the resulting file, and reports the actual number that a destination is likely to inspect. The original remains untouched, so you can try a stricter limit without losing the source.
A large canvas can remain too heavy even after quality is lowered. Start with the destination dimensions when they are known, then choose fit or crop so the image does not become distorted. If the final result still fails, the report says whether the byte limit or the pixel requirement is the constraint instead of silently changing both.
Questions people ask
No. JPG, PNG, and WebP files are processed in this browser and are not sent to an Aftermath conversion server.
Yes. Add multiple files, reorder them, prepare the batch, and download the validated results individually or as one local ZIP.
Set a maximum KB value when the destination specifies a ceiling rather than a fixed output size. The starter setting is 100 KB and can be changed. For JPEG or WebP, the local processor searches for the highest encoder quality that stays at or below the ceiling, then may reduce dimensions if quality tuning is exhausted. PNG receives a size check but does not use that quality search, so an oversized result can fail.
An application accepts a photograph up to 150 KB but does not prescribe an exact pixel canvas.
Observed operation: Set 150 KB as the maximum and let the local quality search reduce encoding quality before it considers reducing the canvas.
Review the result: Use the measured output bytes and preview to decide whether the downloaded copy is both under the ceiling and still legible.
Boundary: A maximum-size pass does not prove visual quality, minimum-size compliance or acceptance by the destination.
Compress an image under a user-selected maximum KB ceiling when no fixed output dimensions are required.
The selected image stays in the current browser session and is not sent to an Aftermath processing service. How local processing is verified.
Checks the displayed limits and reports or creates a separate processed image copy or local measurement report from one supported local image.
A local measurement or export does not guarantee acceptance by an external destination.
