About Shift

Shift exists because the default “convert to WebP” result on the web is still an upload form. That is a bad default for photos of homes, IDs, children, and unreleased work. The second failure mode is quieter: sites that claim AVIF on a phone, call toBlob('image/avif'), and hand you a file that is not AVIF. Shift’s badge and disable path are the product response to that lie.

The engineering is deliberately small. WebP, JPG and PNG go through Canvas. AVIF encode/decode uses a local WASM codec when the probe passes. ZIP is JSZip. There is no account graph, no cloud folder, no watermark renderer. Quality and max dimensions are the only knobs because codec choice is the job.

Shift is one site, one repository, one domain: shift-local.vercel.app. It is not a tab inside a suite. The converter does not require an email. Ads, when they are live, are independent of the pixels you drop. Until Google approves the site, the ad slots are placeholders so we do not serve empty Auto ads on a thin page.

Who makes it

Ultimatum operates Shift. We ship small private utilities next to client work because the public tools for “just change the codec” were either upload farms or dishonest about AVIF. Publisher ID for this property is ca-pub-7636435144500691. Contact: ultaultimatum@gmail.com. Hub: Ultimatum hub.

Ultimatum also ships other private utilities. They are separate sites, separate repos, separate AdSense properties — not tabs inside Shift:

• Crush — compress JPG, PNG and WebP
• HEIC Local — HEIC to JPG/PNG
• Folio PDF Toolkit — merge, split, compress PDFs
• Nota — invoice PDFs
• Strip — EXIF / GPS metadata

Questions: Contact. How the converter works: Guide. Privacy: Privacy.