The file tool library

Find your file tool

Open, convert and check files in your browser. Choose a topic or a tool, then review its supported formats and examples before using your own file.

Available tools

Calendar & Subtitles RRULE Recurrence Generator The RRULE generator turns a supported repeating schedule into an iCalendar recurrence rule and…

Craft & Hobby Files FIT to GPX Activity Converter Convert positioned FIT activity records to GPX locally. Preserve available time and altitude, and…

Finance & Data Files CSV Encoding to UTF-8 Converter Re-decode CSV with an explicit character encoding. Preview accented text and columns, then download…

Calendar & Subtitles SRT to FCPXML Title Generator Convert SRT to FCPXML when you want a supported title-based starting point for subtitle…

Developer Files AASA JSON Preflight Use the AASA validator to catch local JSON and association-rule problems before deploying an…

References & Publishing EPUB Package Preflight This EPUB validator checks a useful first layer of an unencrypted ebook: its ZIP…

Calendar & Subtitles SRT Subtitle Merger Merge ordered SRT segments or two already aligned subtitle languages. Preview cue timing and…

References & Publishing BibTeX to RIS Converter Convert BibTeX to RIS when a collaborator or reference-manager workflow needs tagged reference records…

Craft & Hobby Files KML and KMZ to GeoJSON Converter Convert supported KML or KMZ geometries to GeoJSON locally. Preview paths and preserved properties,…

Calendar & Subtitles SRT to Plain Text Converter Turn SRT subtitles into a readable UTF-8 transcript. Keep optional start timestamps or join…

Start with your file format

Each tool explains its accepted inputs, downloadable outputs and limits. The plugin processes selected file bytes locally and does not upload them to WordPress.