Batch Image Processor
Resize, convert and compress a batch in one tab. Choose images once, adjust settings and download locally.
- Choose images once
- Resize, convert and compress
- Download results
Change options without choosing the files again. Each change starts from the original image; PNG quality is lossless and JPEG flattens transparency onto white.
Results appear here after choosing images.
What does the batch image processor do?
Pocketful resizes, converts and compresses multiple still images in one browser tab. Choose the originals once, then change the longest side, output format and quality. Every change starts from the originals; files are not uploaded to Pocketful.
Example: steps and expected output
- Load the public 1200 × 800 PNG sample, or choose your own JPG, PNG or WebP images.
- Set Max side to 800 px and Format to JPEG. Leave quality at 80%.
- Inspect the result, then download. Change to WebP to compare another format without choosing the file again.
| Input | Setting | Expected result |
|---|---|---|
| 1200 × 800 PNG sample | 800 px longest side, JPEG | 800 × 533 JPEG |
| Same original, still loaded | Change output to WebP | 800 × 533 WebP |
This synthetic gradient demonstrates dimensions and format, not photo-quality or compression-rate benchmarks. File size depends on the input and browser encoder.
Limits and important details
- PNG is lossless; its quality slider does not behave like JPEG or WebP. JPEG fills transparent areas with white.
- The browser decodes images into memory. Large images and batches may exceed device limits; keep the originals.
- Download all saves individual results. This workbench does not create a ZIP archive or preserve animated frames.
Content updated:
FAQ
Do I need to upload the files again after changing quality?
No. Originals stay in this tab until you clear them or leave. Settings trigger a new result from each original.
Can the result be larger than the original?
Yes. Format, source content and encoder settings affect size. Inspect the displayed sizes before saving; a smaller output is not guaranteed.
Which output should I use for a transparent logo?
Choose PNG or WebP to retain transparency. JPEG replaces transparent areas with white.