Your files stay on your Mac.
Converting WebP to TIFF produces a lossless, uncompressed raster file compatible with print workflows, archival systems, and professional imaging software. Convertessa decodes each WebP frame and writes a standards-compliant TIFF — preserving every pixel at full resolution. Files never leave your Mac.
Drag one image or an entire folder onto Convertessa. The app reads both lossy and lossless WebP, including animated files.
Choose TIFF from the output format list. Convertessa writes a full-resolution, lossless TIFF and strips embedded EXIF metadata from the output.
Click Convert. Your TIFF files are saved alongside the originals — or to any folder you pick — without any upload or internet connection.
Images, audio, video, documents, archives and eBooks — all converted natively, right on your Mac.
Pick a format you have — see everything Convertessa can turn it into.
Convert hundreds of files at once with per-type group defaults and individual overrides.
First-class support for HEIC, AVIF and WebP — encode and decode, both ways. Read JPEG XL and a dozen more modern formats too.
Drop files anywhere on the window. Native, instant, and exactly what you’d expect on a Mac.
Dial in compression, resolution and bitrate. Keep originals pristine or shrink for sharing.
Never overwrite a file by accident. Convertessa appends safe suffixes automatically.
Every job is logged locally. Re-run a previous conversion or revisit recent outputs in a click.
Bundle your converted files straight into a single ZIP, TAR or 7z — packaged and ready to share the moment a job finishes.
Right-click any file in Finder and choose Convert. A Quick Action handles it on the spot — no need to open the app first.
Shrink Convertessa to a tidy mini window that tucks into a corner — just a drop zone and a format picker for quick, one-off conversions.
No cloud. No account. No upload. Every conversion happens entirely on-device, using the power already in your Mac. What you convert is nobody’s business but yours.
Script conversions, wire them into your build, or batch a folder from the terminal. The same engine, no GUI required.
Read the full CLI documentation →Shrink Convertessa down to a small, focused window — drop, convert, done, with your recent conversions one click away.
macOS 14+ · Apple Silicon & Intel
New formats, new features, and fixes — every release, on the record.
No. TIFF is a lossless format, so Convertessa writes all pixel data exactly as decoded from the WebP source. Nothing is discarded during the conversion.
No. Convertessa strips EXIF and other embedded metadata from the TIFF output, which is useful when preparing images for distribution or archival without location or device data attached.
Yes. Drop a folder onto Convertessa or use the CLI batch command (convertessa ./folder/ --to tiff) to process every WebP file in one pass.