--- title: "Free audio, subtitle & voiceover tools | Speecho" description: "Free browser tools from Speecho: a voice recorder, a video and screen recorder, a teleprompter, an audio speed changer, a silence remover, cost calculators, a subtitle converter, timing shifter, readability checker and a filler word counter." canonical: "https://speecho.app/tools/" language: "en" publisher: "Speecho" --- Free tools # Free tools for recording, scripts & subtitles Small, free, no-signup utilities that run right in your browser - no file ever leaves your device. [Replace audio in video](https://speecho.app/tools/replace-audio-in-video/) Put a new soundtrack on an MP4 or MOV: a voice-over, a translation or music. The picture is copied, nothing uploaded. Open tool → [Teleprompter](https://speecho.app/tools/teleprompter/) Scroll a script at the pace you actually speak, with mirror mode for prompter glass. Open tool → [Read aloud](https://speecho.app/tools/read-aloud/) Listen to any text or a PDF, Word or EPUB file read by your browser’s voices, sentence by sentence. Files are not uploaded. Open tool → [Voice typing](https://speecho.app/tools/voice-typing/) Dictate instead of typing, right in your browser, then copy the text anywhere. Chrome, Edge and Safari. Open tool → [Voice note converter](https://speecho.app/tools/voice-note-converter/) Turn WhatsApp .opus, Telegram .oga and old .amr voice messages into MP3 - in your browser, nothing uploaded. Open tool → [Voice recorder](https://speecho.app/tools/voice-recorder/) Record from your microphone and download the file. No account, no app, nothing uploaded. Open tool → [Quizlet to Anki converter](https://speecho.app/tools/flashcard-converter/) A Quizlet export, an Anki export or any word list into a file Anki or Quizlet imports, cleaned up on the way. Nothing is uploaded. Open tool → [CSV to Anki deck](https://speecho.app/tools/csv-to-anki-deck/) Turn a word list or CSV into an .apkg deck that opens in Anki, with sound on every card from your MP3s. Nothing uploaded. Open tool → [Remove background noise](https://speecho.app/tools/remove-background-noise/) Clean hum, hiss, fans and street noise out of a voice recording, with before and after - in your browser, nothing uploaded. Open tool → [Video recorder](https://speecho.app/tools/video-recorder/) Record your camera, your screen or both, with an optional script on screen. Download the file, nothing uploaded. Open tool → [Merge audio files](https://speecho.app/tools/merge-audio-files/) Join voice messages or split recordings into one MP3, with the volume evened out - in your browser, nothing uploaded. Open tool → [MP3 to M4B](https://speecho.app/tools/mp3-to-m4b/) Join MP3s into one audiobook file with chapters, a cover and the title, for Apple Books and audiobook apps. Nothing uploaded. Open tool → [Conversation captions](https://speecho.app/tools/conversation-captions/) Put a phone or tablet on the table and read what is said in large text. For talking with someone who is hard of hearing. Open tool → [Live translation sign maker](https://speecho.app/tools/live-translation-sign/) Turn your listener link into a printable sign: QR code, a heading in your audience's language and three steps. Open tool → [Speaking time calculator](https://speecho.app/tools/speaking-time-calculator/) How long is your script when read aloud? Word & character counts, adjustable pace. Open tool → [Extract audio from video](https://speecho.app/tools/extract-audio-from-video/) Pull the soundtrack out of an MP4 or MOV as MP3 - in your browser, nothing uploaded. Open tool → [Subtitle timing shifter](https://speecho.app/tools/subtitle-shifter/) Resync out-of-sync captions - shift SRT/VTT timestamps or rescale for a new framerate. Open tool → [Silence remover](https://speecho.app/tools/silence-remover/) Shorten the dead air in a recording - see every gap on the waveform before it goes. Open tool → [Audio quality checker](https://speecho.app/tools/audio-quality-checker/) Is your recording clear enough to transcribe? Noise, signal-to-noise and clipping in seconds, plus a microphone test. Open tool → [Caption safe zone checker](https://speecho.app/tools/caption-safe-zone-checker/) See which captions the Reels or TikTok interface will cover, and download a 1080x1920 overlay. Open tool → [Subtitle readability checker](https://speecho.app/tools/subtitle-readability-checker/) Flags captions that read too fast (CPS), run too long, or use too many lines. Open tool → [Filler word counter](https://speecho.app/tools/filler-word-counter/) Count your um's and crutch words in 12 languages - from text or an SRT - then strip them out. Open tool → [YouTube & podcast chapter formatter](https://speecho.app/tools/youtube-chapter-formatter/) Rough timestamps into a 0:00 Title list for YouTube, or Podcasting 2.0 chapters as JSON or an RSS tag. Open tool → [Subtitle converter (SRT ↔ VTT ↔ SBV ↔ TXT)](https://speecho.app/tools/subtitle-converter/) Convert between subtitle formats, or turn captions into a speaker-labelled transcript. Nothing is uploaded. Open tool → [Audio speed changer](https://speecho.app/tools/audio-speed-changer/) Play a lecture or podcast at up to 3x with normal pitch, and see what each speed saves. Open tool → [Text-to-speech cost calculator](https://speecho.app/tools/tts-cost-calculator/) Paste a script and see the credits, price and speech length across voice tiers. Open tool → [Transcription cost calculator](https://speecho.app/tools/transcription-cost-calculator/) Enter the length of your audio and see the pay-as-you-go price - from $0.83/hour. Open tool → ## Need the transcript or subtitles themselves? Upload any audio or video and get a transcript, subtitles, summary and translation - from $0.83/hour, no subscription. [Transcribe a file free →](https://my.speecho.app)