Universal Converter
Convert video, audio, and image files between popular formats with local browser processing.
Video, audio, imagesPrivate conversionNo signup
Private browser tools for media-heavy work
Edit, convert, and compress files without uploading them.
opentoolbox.net gives creators, students, teams, and everyday problem-solvers fast file tools that run on-device. Trim videos, convert formats, merge PDFs, extract audio, and keep sensitive files out of server queues.
0 bytes
uploaded for local tools
25
focused utilities
$0
no watermark
Privacy-firstNo cloud upload for supported tools.
Fast startsPick a tool, drop a file, export.
Built for intentDedicated workflows beat generic AI filler pages.
High-intent tools
Most popular file workflows
These are the jobs people search for when they need a result now: smaller videos, clean audio, merged PDFs, format conversion, and quick edits.
Trim Video
Cut MP4, WebM, MOV, and other video files to exact start and end timestamps.
Precise timestampsLocal enginePreview before export
Compress Video
Reduce video file size with quality presets, bitrate controls, and resolution limits.
Smaller filesQuality controlsMP4 output
Merge Videos
Join multiple video clips into one file and reorder them before exporting.
Drag reorderBatch inputStream copy
Video to GIF
Turn short video clips into looping GIFs with quality and timing controls.
Looping GIFsClip selectionSocial-ready output
Remove Audio
Strip sound from a video or replace it with a silent compatibility track.
Silent videoFast exportNo upload
Extract Audio
Extract audio tracks from video files and save them as MP3, WAV, or AAC.
MP4 to MP3High bitrateLocal extraction
Merge PDFs
Combine several PDFs into one document with drag-to-reorder controls.
Reorder pagesLocal PDF engineNo upload
Split PDF
Extract page ranges or split a PDF into smaller documents.
Page rangesBatch outputPrivate PDF splitting
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Video tools
PDF tools
Private by design
A better fit for real files, not demo traffic.
Many file-tool pages are thin wrappers around upload forms. opentoolbox.net is built for the moment when a user has an actual file on their machine and wants an immediate result without handing that file to another server.
Local processing also creates a stronger ad-supported experience: users stay for the workflow, compare settings, preview output, and often chain into the next tool instead of bouncing after one empty page view.
Answers before the click
FAQ
Are files uploaded to opentoolbox.net?
No. Supported tools process files locally in your browser with WebAssembly and browser APIs, so selected files stay on your device.
Is there a watermark or account requirement?
No. The tools are free to use without accounts, queues, subscriptions, or watermarks on exported files.
Why is local processing better for large media files?
Local processing removes upload time, keeps private files off external servers, and lets the browser use your device for conversion, editing, and export.