About zer.ai

Focused tools for real file tasks

zer.ai is built around a simple idea: a file tool should open quickly, explain what it can do and let the user finish the task without navigating through unrelated software. The site includes individual pages for specific needs such as HEIC to JPG, WAV to MP3, ZIP extraction, subtitle conversion, JSON formatting and SEO metadata generation.

Browser-first processing

Whenever the selected format is supported, processing happens on the user's device. This design reduces unnecessary file transfers and keeps ordinary processing costs predictable. It also means performance depends partly on the browser, available memory, file size and codec support. zer.ai reports these limits rather than hiding them.

Tools, batches and workflows

A single tool performs one clear operation. Batch tools repeat that operation across multiple files. Workflows combine related steps—for example, converting and compressing images or converting a queue of audio files and packaging successful results in one ZIP download.

How the library grows

New pages are chosen from recurring file tasks, verified search demand and gaps that can be solved reliably in the browser. Related format pages are connected so users can move between both directions of a conversion. A page is not treated as complete until its underlying processor, limits, error states and explanatory content can be tested.

What zer.ai does not promise

zer.ai is not a permanent storage service and should not be the only copy of an important file. Damaged inputs, unusual codec profiles and browser limitations can affect results. Keep original files and verify converted outputs in the application where they will be used.