Skavio File Toolbox: choosing JPG, PNG or WebP for a document handoff
Skavio File Toolbox converts supported images to JPG, PNG or WebP, but the right output depends on what the recipient needs to open, read and upload. Choose for the receiving workflow first; compare file sizes only after checking readability.
1. Match the format to the handoff
| Format | When to consider it | What to check | |---|---|---| | JPG / JPEG | Photographic material, including document photos, when the recipient accepts JPEG. | Ordinary lossy JPEG compression can affect sharp text and edges. Inspect small digits, decimal points and fine lines. | | PNG | Text-heavy page images, screenshots and line graphics when avoiding additional lossy compression matters. | PNG uses lossless compression and supports optional transparency. Check the downloaded size and appearance; conversion does not guarantee preservation of every source-document property. | | WebP | Image handoffs where the actual receiving application accepts WebP. | The format supports lossy and lossless compression, including transparency. This does not establish which settings a particular conversion uses. Test the downloaded output in the destination. | These are starting points, not a universal ranking. W3C documents PNG’s lossless compression; the Krita manual explains JPEG’s trade-offs for sharp-contrast content; Google documents WebP’s compression modes and browser support. Browser support alone does not establish that a business upload portal accepts WebP. Format capabilities are not guarantees about Skavio’s encoding settings, transparency handling or metadata preservation.
2. Confirm the destination—and retain the original
Before uploading, ask the recipient which extensions are accepted, whether the size limit applies per file or to the whole submission, and whether they need individual page images or the original document. A format that opens in your browser may still be rejected by their application. Keep an unchanged source copy and create the handoff files separately. This is especially important when converting PDF pages: a page image is not a substitute for searchable document text. Adobe distinguishes image-only scans from documents with an OCR-generated searchable text layer. If the recipient needs text search, copying or downstream text processing, do not replace the original document with images alone. Avoid repeatedly re-encoding a JPEG while experimenting. Return to the retained source for each candidate conversion rather than making each new version from the previous lossy output.
3. Convert one representative file in File Toolbox
Open Skavio File Toolbox, upload a representative source and select a supported output format. Supported image inputs include JPG/JPEG, PNG, WebP, BMP, TIF/TIFF, GIF, HEIC/HEIF and AVIF. Verified image outputs are JPG, PNG, WebP and PDF. For a PDF source, the verified page-image outputs are PNG and JPG. Multi-page image output is delivered as a ZIP. Do not plan around direct PDF-to-WebP conversion: that route is not in the verified conversion matrix. Choose a sample that exposes likely problems. For a fictional supplier-invoice handoff, use a page containing small print, a total with decimal places and faint table lines—not just a large, clean heading. Test those details before preparing the full batch.
4. Test the downloaded result before sharing the batch
Treat the download as a candidate deliverable, not an automatic approval. Compare it with the source, then open or upload it in the application the recipient will actually use. Compare actual file sizes too: Google notes that WebP output can be larger than its source, depending on the content and encoding settings.
- Read the smallest text and check totals, decimal points, reference numbers and fine lines against the original.
- Check orientation, page edges and whether any essential content is cropped or missing.
- Inspect backgrounds and any transparent areas in the receiving application; do not assume the conversion preserves their appearance.
- For a multi-page ZIP, extract it and verify page count and order before delivery. Confirm whether the recipient wants the archive or the individual images.
- Verify that the receiving system accepts the extension and downloaded size. If the sample fails, revisit the format before converting the remaining files.