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Free creator tools for video, audio, captions and titles.

Choose a specific task: convert video to MP3, trim or reverse audio, find a song's BPM, reduce centered vocals, boost volume, process permitted social media, or draft a caption or title. Use the tools from your browser without a FluxNote account. File and fair-use limits apply.

MP4 to MP3 Converter

Convert an MP4, MOV, M4V, or WebM file to MP3 online. Extract audio from your own video free, without signup, and download a temporary private result.

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Vocal Remover

Reduce centered vocals in a stereo song and download an instrumental MP3. Free online vocal remover with private temporary file processing and no signup.

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BPM Finder

Find the BPM of an MP3, WAV, or music excerpt online. Upload a file for a tempo estimate from 60–200 BPM. Free, no signup; not a song key detector.

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Audio Volume Booster

Make an audio file louder online with a controlled 6 dB boost and peak limiting. Free MP3 volume booster with private temporary processing and no signup.

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Audio Trimmer

Trim MP3, WAV, M4A, FLAC, OGG, or MP4 audio by entering start and end times. Free online audio cutter with private processing and no signup.

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Reverse Audio

Reverse an MP3 or audio file online and download the backwards result. Free private audio reverser for common formats, with no signup required.

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Instagram Audio Downloader

Download Instagram Reel audio as MP3 from supported public links. Free, no login required. Works in your browser for media you own or have permission to use.

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YouTube Shorts to MP3

Convert YouTube Shorts to MP3 and download audio from supported public links. Free online converter, no signup. Only process media you have permission to use.

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TikTok to MP3

Convert TikTok to MP3 from a supported public video link. Download audio online without signup or an app. For media you own or have permission to process.

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YouTube Shorts Downloader

Download YouTube Shorts as MP4 from supported public links, up to 1080p when available. Free, no signup. Only download videos you have permission to use.

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Twitter Video Downloader

Download Twitter and X videos as MP4 from supported public post links. Free online downloader, no signup. Use only media you have permission to save.

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TikTok Caption Generator

Generate up to five TikTok post captions with hashtag ideas. Describe your video, choose a tone, and copy a draft. Free, no signup; not a subtitle editor.

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YouTube Title Generator

Generate up to 10 YouTube title ideas for videos and Shorts. Enter a topic, compare suggestions, and copy your favorite. Free, no account required.

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Which free tool should I use?

Use MP4 to MP3 when you have a video file and need its soundtrack. Audio Trimmer selects a precise time range, Volume Booster applies a controlled 6 dB increase, and Reverse Audio creates a backwards copy. BPM Finder analyzes tempo without creating a copy of the source.

Vocal Remover performs transparent stereo center-channel reduction, not AI stem separation. For public social links, choose the matching Instagram, TikTok, YouTube Shorts, or Twitter/X processor. The caption and title generators create writing suggestions that you should review before publishing.

Need to create or edit a complete video instead? Explore our AI creation tools and workflows. Their account and plan requirements differ from these free utilities.

Responsible use: File tools use private temporary jobs; link processors accept supported public URLs only. Process content you own, license, or have permission to use. Private and protected sources are not supported.

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