TIFF to PNG Converter
Convert TIFF (Tagged Image File Format, 1986) to PNG (Portable Network Graphics, 1996) entirely in your browser. Output files are roughly the same size — within a few percent either way for ordinary photographs. Files never leave the tab — there is no upload.
Which formats are supported?
Inputs: PNG, JPEG, WEBP, AVIF, GIF, BMP, ICO, TIFF (Safari) and HEIC/HEIF (via libheif WASM, loaded on demand). Outputs: PNG, JPEG, WEBP, AVIF — each with an optional WASM encoder variant in the dropdown (mozjpeg, oxipng, libwebp, libavif) for tighter compression or consistent output across browsers. Vendor camera RAW formats (CR2/CR3/NEF/ARW/DNG/...), PSD, EPS, TGA, XCF and ICNS are still rejected — those need format-specific decoders we haven't shipped yet.
Both formats default to lossy encoding for photographs. We use the default quality setting (92) which preserves visually-identical detail for most images. Drop the slider lower for hero images on slow connections, raise it for printable masters.
Both formats support a true alpha channel — anti-aliased logos, drop shadows and translucent overlays survive the round-trip unchanged.
PNG is the natural choice for Logos, icons, UI screenshots, text, Anything with sharp edges or flat colour, and Images that need a true alpha channel. It is a poor fit for Photographs (will be much larger than JPG/WEBP/AVIF) and Animated content. Every browser since IE 7; every modern OS.
TIFF: what it is
TIFF is less a format than a container family — there are hundreds of valid TIFF variants (LZW, ZIP, JPEG-in-TIFF, raw RGB, CMYK, multi-page …). Not all are decodable without specialised libraries.
Safari decodes TIFF natively. Chromium and Firefox don't, so our TIFF support gracefully falls back to a clear error on those browsers rather than producing junk.
PNG: what it is
PNG uses DEFLATE (the gzip algorithm) over filtered scanlines. It is lossless: a PNG round-trip never changes a pixel.
Encoding cost lives almost entirely in choosing per-row filters. The oxipng encoder we ship trials more filter combinations than canvas does and typically shrinks files 10–25% further.
At a glance
- Typical size change
- roughly the same size
- Transparency preserved
- Yes — both formats support alpha channels
- Compression
- TIFF (both) → PNG ( lossless)
- PNG browser support
- Every browser since IE 7; every modern OS.
Frequently asked questions
Is the converted PNG smaller than the original TIFF?
On a typical photograph, roughly the same size — within a few percent either way. Synthetic graphics (logos, screenshots) may behave very differently — try a single file first if size matters.
Will my TIFF be uploaded to convert it?
No. The conversion runs inside the browser tab using WebAssembly. Your file is never sent over the network — drop it, convert it, download it, all on your machine.
My TIFF won't decode — why?
TIFF is a container with hundreds of valid variants. Only Safari decodes TIFF natively; Chromium and Firefox don't ship a TIFF decoder. If yours fails, open it in another tool and re-save it as PNG or JPG first.