ExactKB is an independent image utility for files that must fit a byte ceiling. It processes supported images in your browser, searches for a fitting encode, and shows output dimensions and exact bytes.
Who publishes the site
ExactKB is developed by Ultra Edge Labs, a software development company. For support or corrections, contact [email protected].
What the tool does
The compressor decodes image pixels, resizes when needed, and writes a new JPG, WebP or PNG. It keeps processing on the device and does not offer an image-upload API, account system or server file locker. Its output is a new image; preserve your original.
What a result means
A successful result meets the selected byte ceiling. It does not certify an application photo, preserve original metadata, or guarantee an exact padded size. Size presets are conveniences. Always check the current destination’s format, minimum dimensions and composition rules.
How we document behavior
The guides describe the encoder’s practical limits and include downloadable measured samples. Those samples are generated test images, not customer files. Individual photographs and browsers can produce different results. Official application guidance is linked where relevant, and the authority’s current instructions take precedence.
Latest content review
17 October 2026: added downloadable, measured examples to the five byte-limit tools and both format-conversion tools; clarified dimension tradeoffs and replaced unsupported application-acceptance claims. Also fixed a resize edge case that could widen extremely narrow images, and clarified the PNG result hint. The controls and normal workflow remain the same. These changes help users reproduce results; they do not claim approval by an application service or advertising network.
Funding and contact
The current tool is free to use. If advertising is introduced, it must be visually distinct from tool and download controls, with privacy information updated for the actual implementation. Read the privacy policy, terms, or contact page.