WebP to TIFF Converter

WebP is made for web pages; TIFF is what print shops, publishers, archives, scanners and document systems expect. This converter decodes each WebP in your browser and writes a baseline TIFF that keeps every decoded pixel, with LZW, Deflate or no compression, a print resolution, and transparency kept as an alpha channel if you want it. Several images can also go into one multi-page TIFF.

How to use this tool

1. Choose one or more WebP images.
2. Pick the compression: LZW is the safe default, None the most compatible.
3. Keep the stored resolution or set one, such as 300 DPI; keep or fill transparent areas.
4. Optionally combine everything into a multi-page TIFF, then download.

Formula

TIFF = 8-byte header ("II", 42, first directory offset) + per page a directory of tags (width, height, bits per sample, compression, RGB, strip offsets, rows per strip, strip sizes, X/Y resolution, unit) + about 64 KB strips of pixels.

With LZW or Deflate each row is first stored as differences between neighbouring pixels (predictor 2), which helps both compressors. Transparent WebPs give RGBA pages with ExtraSamples = 2 (unassociated alpha). Multi-page files mark each directory as a page and number it.

Example

An uncompressed 160 × 100 px WebP becomes exactly 48,192 bytes: 8 bytes of header, a 162-byte directory with 13 tags, 22 bytes of tag values and 160 × 100 × 3 = 48,000 bytes of pixels. Combining two such images gives 96,424 bytes, since each page gets two more tags.