FREE AI PROFANITY FILTER
Automatic Profanity Detection for Audio & Video
Upload any audio or video file. AI speech recognition transcribes it with word-level timestamps, built-in profanity lists flag every problem word, and you bleep them with one click. Free, online, no download.
On a phone? Use Studio for cloud transcription instead of asking your mobile browser to run the AI model locally.
WHAT YOU GET:
- ✓ Whisper speech recognition (large-v3)
- ✓ Built-in profanity lists + custom lists
- ✓ Exact / partial / fuzzy / manual matching
- ✓ 6+ bleep sounds + custom uploads
- ✓ Audio (MP3, WAV) and video (MP4, MOV, AVI, WebM)
- ✓ 100% private browser mode
An AI profanity filter uses speech recognition to detect spoken swear words in audio or video, then replaces them with a bleep sound or silence. Unlike traditional text-based filters, an AI filter understands actual spoken language — including accents, slang, and natural pacing. Bleep That Sh*t! runs entirely in your browser via WebAssembly. No download or account required.
HOW AI PROFANITY FILTERING WORKS
Step 1 — Speech recognition
Traditional profanity filters match text against a word list. That works for chat but not audio. AI profanity filters use a speech recognition model (Whisper) trained on hundreds of thousands of hours of audio, so they understand actual spoken language — including accents, slang, and natural pacing.
Step 2 — Word-level timestamps
Whisper emits not just the words but precise start and end times for each one. This is the key trick: knowing when each word happens means a bleep can be inserted exactly over the swear word with no manual scrubbing.
Step 3 — Pattern matching
We layer four matching modes on the transcript: exact (match the word verbatim), partial (match any word containing the substring), fuzzy (match minor spelling variations and slang), and manual (click-to-toggle anything else). Built-in profanity lists ship with the tool; you can add custom lists.
Step 4 — Audio replacement
Each flagged word gets replaced by a bleep sound aligned to its timestamps. Audio is re-encoded with the bleeps stitched in. Video files get the same treatment on the audio track, while the video itself remains untouched.
FILTER YOUR FILE IN 4 STEPS
UPLOAD AUDIO OR VIDEO
Any MP3, WAV, MP4, MOV, AVI, or WebM file. Browser mode keeps your file on-device; Studio cloud is available for longer recordings.
WHISPER TRANSCRIBES IT
OpenAI's Whisper speech recognition model generates a complete transcript with word-level timestamps — every word with millisecond-accurate start and end times.
PROFANITY DETECTED AUTOMATICALLY
Built-in profanity lists, fuzzy matching, and custom word lists flag every problem word. Adjust matches if needed — you stay in control.
APPLY THE FILTER & DOWNLOAD
Pick a bleep sound (classic TV bleep, brown noise, silence, or upload your own), preview the result, then download. No watermark.
WHO USES AN AI PROFANITY FILTER?
YouTube Creators
Run videos through the filter before upload to stay monetization-safe and demonetization-free.
Teachers & Educators
Filter swear words from documentaries, interviews, and YouTube clips for classroom use. FERPA-safe browser mode.
Podcasters
Create clean episode feeds from raw recordings. No re-recording required.
Legal & Compliance
Beyond profanity — filter names, PII, or any specific words from depositions, training, and recorded calls.
100% PRIVATE AI FILTERING
Browser mode runs the Whisper model and all bleep processing on your device via WebAssembly. Zero bytes of audio or video data leave your machine during free-tier processing.
FREQUENTLY ASKED QUESTIONS
What is an AI profanity filter?
An AI profanity filter uses speech recognition to detect spoken swear words in audio or video, then replaces them with a bleep sound or silence. Traditional profanity filters only match text; an AI filter understands actual spoken language with word-level timing.
Is there a free AI profanity filter for audio and video?
Yes — Bleep That Sh*t! is a free browser-based AI profanity filter. It uses OpenAI Whisper for transcription, applies built-in profanity lists or your custom selections, and outputs the censored file. Files up to 10 minutes are free; no account needed.
How accurate is an AI profanity filter?
Whisper AI produces highly accurate transcripts on clear speech. Combined with built-in profanity lists and pattern matching (exact, partial, fuzzy), it catches most spoken profanity automatically. You can manually adjust the transcript to fix any misses.
Does the AI profanity filter work in real-time?
No — this tool processes uploaded files, not live streams. A 5-minute video typically takes 2-3 minutes to transcribe and filter. For pre-recorded content (podcasts, YouTube uploads, classroom videos), batch processing is faster than real-time filtering anyway.
Can I use the AI profanity filter on videos for YouTube?
Yes. Run your video through the filter before uploading to keep your content monetization-safe and demonetization-free. The output MP4 works directly with YouTube, TikTok, Instagram, and any other platform.
Is my content private when I use the AI profanity filter?
100% private in browser mode — your file never leaves your device. There's an optional cloud tier for longer files, but the default free experience runs entirely locally via WebAssembly.
Files up to 10 minutes processed free. Premium plans for longer recordings.