Image compressor to 20KB
Check a folder of images against the same 20KB ceiling. Run the batch, inspect each result, then download the available files together.
Drag images in, paste, or click to choose
A whole folder works too · Ctrl/Cmd+V pastes · on phone this opens your file picker · up to 40 MB per file
How the batch 20 KB image compressor works
After adding several images, click Compress all. The queue runs up to three jobs concurrently, subject to the worker pool’s hardware limit. Results and decoding errors appear per file. A completed result that exceeds 20KB is a missed target, distinct from a file that could not be processed.
Limitations of the batch queue
- Each input can be up to 40MB (41,943,040 bytes). There is no file-count cap, but decoded images and previews consume memory.
- One added image starts automatically. Multiple files require the batch action; changing the target requires another run.
- The download includes available results, which may include missed targets. Review their badges before submitting a batch.
Questions about the batch 20 KB image compressor
How many files can I compress at once?
There is no fixed count limit. Processing runs up to three jobs at a time, and large sources or batches can use substantial memory. Start with a smaller batch if your browser struggles.
Does one failed image stop the other files?
A processing error is reported for that file while other queued files continue. An image that processed but exceeded 20KB instead has a completed result with a missed-target warning.
How do I save the batch after checking it?
Click Download all as ZIP for several available results, or Download when there is one. Downloading is a separate action from Compress all and does not happen automatically.
What happens to duplicate names in the ZIP?
Names that would collide receive a number. The ZIP groups the available files; it does not run another image-compression pass.
