Merge Audio
Join compatible audio files in selected order without adding a transition.
Tool code processes selected files and entered content in your browser and does not submit them to a TOOLGRID processing endpoint. TOOLGRID measures tool usage, not the content you enter.
- No TOOLGRID input upload
- No account
- Review before copy
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What this tool does
Concatenate two or more compatible local audio files. The fast path expects matching codec, sample rate, channel layout, and container characteristics.
Order matching files, merge, and listen across every boundary for gaps, clicks, or level changes.
Processing starts only after you choose files and press the action button. The media engine is not preloaded on the homepage or ordinary tool pages.
Where this tool earns its place
Combine tracks created with the same recorder or export preset.
What to check before relying on the result
- Mismatched inputs can fail and should be converted to one shared format first.
- The workspace does not crossfade, normalize loudness, or remove gaps.
Open a nearby browser tool when you need to validate, convert, or reuse the result.
How to use
01Use Cases
Combine tracks created with the same recorder or export preset.
Order matching files, merge, and listen across every boundary for gaps, clicks, or level changes.
Tips & Tricks
- 01Start with a short representative file
Confirm codec and browser support before committing device time to a long source.
- 02Keep the source
Every output is a new file. Retain the original until you have completed a full playback check.
FAQ
02Is my media uploaded to TOOLGRID?
No. The selected files are written into an in-browser worker file system. The self-hosted encoder assets are downloaded separately, but TOOLGRID does not receive the selected media for processing.
Why can a local media job be slow?
The compatibility encoder runs single-threaded in WebAssembly and is limited by device CPU, available memory, source duration, resolution, codecs, and browser behavior.
What should I verify in the result?
Check playback, duration, seeking, video and audio synchronization, expected tracks, visual quality, and actual file size in the browser or player used by your audience.