How do I open iPhone HEIC photos on Windows or send them through a form?

Convert them with HEIC to JPG, since JPG is accepted by every program and upload form, or with HEIC to PNG if you need PNG. The photos are decoded on your device. Location and camera details are not carried over into the new file.

Can I convert or shrink a video without uploading it?

Yes. Convert video to MP4 rewraps a MOV from a phone as an MP4 in seconds, without re-encoding, and Compress video makes an MP4 smaller for a message or an email limit. Both read MP4, M4V and MOV files, and both keep the video on your device from start to finish.

How do I get the sound out of a video as an MP3?

Video to MP3 saves a video’s sound track as an MP3. To change one audio format into another, such as M4A, WAV, FLAC or OGG into MP3, use Convert audio. Converting between compressed formats cannot add quality that was not there, so keep the original if you may need it again.

Why does Excel show strange characters in my CSV file?

Usually because the file is UTF-8 and Excel did not recognise it, so accented letters turn into symbols. Fix a garbled CSV for Excel adds the mark Excel looks for, and CSV to Excel writes a proper .xlsx instead. Convert text encoding handles older encodings as well.

How do I open a ZIP or a .tar.gz file without installing anything?

Extract a ZIP opens an archive in the browser and lets you save the files inside, including password-protected ZIP files if you know the password. Extract a .tar.gz does the same for the archives common on Linux, and Create a ZIP packs up to 20 files on the free plan.

Format converters with no upload

Each converter decodes and re-encodes the file inside your browser. Nothing is sent to a server, so conversions are instant and private, and they keep working without a connection.

⇄ HEIC to JPG Make iPhone photos open everywhere. Your pictures are decoded on your own device and never uploaded. ⇄ HEIC to PNG Get a lossless PNG from an iPhone HEIC image without any further compression, and without uploading it. ⇄ WebP to JPG Saved an image from the web and got a .webp you cannot use? Convert it to JPG on your own device. ⇄ WebP to PNG Keep transparency and every pixel: turn WebP graphics into PNG files on your own device. ⇄ PNG to WebP Cut image weight on your site by converting PNGs to WebP, transparency included, on your own device. ⇄ JPG to WebP Serve lighter photos on your website or blog by converting JPG to WebP on your own device. ⇄ PNG to JPG Bring a 10 MB PNG down to a few hundred kilobytes without sending it anywhere. ⇄ JPG to PNG Get a lossless PNG copy of any JPG without uploading it anywhere. ⇄ AVIF to JPG AVIF is small but not yet supported everywhere. Convert it to JPG on your own device. ⇄ AVIF to PNG Turn AVIF into a universally supported, lossless PNG without sending the file anywhere. ⇄ SVG to PNG Turn a vector into a sharp bitmap for platforms that do not accept SVG, without sending it anywhere. ♪ WAV to MP3 A WAV is about 10 MB a minute. An MP3 is not.

♪ MP3 to WAV For the software that will only take uncompressed audio. ♪ M4A to MP3 The format your iPhone records in, in the one everything reads. ♪ FLAC to MP3 Lossless at home, something that fits on the phone. ♪ OGG to MP3 Including the voice notes that arrive as .opus. ♪ AAC to MP3 The bare stream, in the container everything reads. ⇄ CSV to JSON Turn spreadsheet exports into JSON for APIs, scripts and config files, without your data leaving the page. ⇄ JSON to CSV Turn API responses and exports into a spreadsheet-ready CSV without your data leaving the page. ⇄ SRT to VTT Make SubRip captions work in the browser's video element and web players, without uploading them. ⇄ VTT to SRT Turn web captions into the SubRip format that almost every player and editor accepts, on your own device. ⧉ Merge CSV files The safe way to join exports that no longer match. # File checksum Does this download match what it should be? ⇄ Markdown to HTML Write in Markdown, paste the HTML anywhere. Rendered locally, so your draft stays on your device. ⇄ JSON to YAML Paste JSON, get YAML. It runs in this page, not on a server. ⇄ YAML to JSON Paste YAML, get JSON. Nothing is uploaded, and nothing is guessed at. ⏺ Screen recorder A tab, a window or the whole screen, with sound — saved as an MP4 and never uploaded. ▶ Compress video A smaller MP4, made on your device by the same encoder your phone records with. ✂ Trim video Keep the seconds you need. The file never leaves your device. ▶ Video to GIF Pick the seconds you want and get a GIF, without the video leaving your device. ▶ Video to images Stills out of a clip, at the spacing you choose, without the video leaving your device. ▶ Remove audio from video Silence a clip without re-encoding it: the picture comes across untouched. ▶ Convert video to MP4 A MOV holding H.264 already is an MP4 in all but the label. This changes the label properly. ↻ Rotate video Sideways phone video the right way up, in seconds and at full quality. ⊞ Merge videos Clips joined end to end into one MP4, on your own device. ♪ Merge audio Several recordings, one file, in the order you set. ◩ Remove video background A person kept, the room behind them replaced, without a green screen and without the video leaving your device. • Crop video A landscape video made vertical or square, the part you choose kept. ▭ Add subtitles to video An SRT file burned into the picture, so the words show on every screen. ≋ Remove background noise from audio Fans, hiss and hum taken out from under a voice. ≋ Remove background noise from video A clearer voice in your video; the picture stays exactly as it was. ◖ Increase audio volume Quiet recordings made louder and even, without clipping. ◖ Increase video volume A quiet video made louder; the picture stays exactly as it was. ♬ Add music to video Drop a video and a song. The music fits the video’s length, sits under the voices, and fades out at the end. ☎ Ringtone maker Drop a song and get a ringtone of its best part, ready for an iPhone (M4R) or an Android phone (MP3). » Change audio speed Faster or slower sound, at the same pitch. ▩ Blur faces in a video Faces found and covered frame by frame, moving with the people in them. Nothing is uploaded. ▩ Blur part of a video Mark what to hide on one frame; it stays hidden for the whole clip. ◈ Add a watermark to a video Your logo or name on every frame, and nothing of ours. ◎ GIF to MP4 The same animation as a small MP4 that every app accepts. ⏸ Remove silence The pauses between sentences, cut out automatically, with the joins smoothed so there are no clicks. ⫖ Split audio at silences One long recording in, a file for every stretch of sound out. ⇄ Shift subtitle timing Subtitles that are right except for when they appear. ⇄ Merge subtitle files Two files, one set of subtitles. ◅ Reverse audio Any sound, played backwards. ◢ Fade audio in and out A clean start and a clean ending. ⫽ Split a video One long video, several playable files. ☷ Extract a .tar.gz The archive Windows will not open. ▣ TIFF to JPG Including the multi-page ones a browser will not even display. ⋈ Split a file Numbered pieces small enough to send. ⋈ Join split files The pieces back into the file they came from. ▦ Split a workbook into sheets One workbook in, one file per sheet out. ♪ Vocal remover What is dead centre in the mix, taken out — or kept. ♩ BPM detector The tempo of a track, read from where the sound gets louder. ♭ Song key finder The key of a track, and the number a DJ mixes it by. ◇ Image to SVG A picture traced into outlines that stay sharp at any size. ◅ Reverse a video Played back to front — the picture and, if you want it, the sound. ♯ Change the key of a song Move a song up or down by semitones at the same tempo, to sing or play along in your key. » Change video speed Faster or slower video in seconds, with every frame kept as it was. ◙ Photo booth Strike four poses — get a photo strip. ◖ Speaker test Is left on the left? Check speakers and headphones in seconds. ♫ Soundboard Press a button, play a sound — for quizzes, streams, class and parties. ▣ Slideshow maker Your photos and a song, made into a video. T Add text to video Titles and captions on your video, each at its own time. ↻ Loop video Repeat a clip — instantly, without losing quality. ♪ Slowed + reverb maker Slower, deeper, dreamier — any song, in seconds. ⇄ Boomerang video maker Forward, back, forward, back — from any clip. ▶ Audio to video Your sound, a picture and a moving waveform — as an MP4. ◍ Voice changer Robot, deep, chipmunk, echo or telephone — for any recording. ◔ Decibel meter How loud is it? Measure the noise in dB(A) with your microphone. 𝄞 Virtual piano Play with the mouse, your fingers or the computer keyboard. ≋ White noise A steady hush for sleep, study and small babies. ∿ Tone generator Any frequency, any wave, left or right. ♮ Guitar tuner Play a string, turn the peg until the needle is centred. ♩ Metronome A steady beat for practice, from Largo to Prestissimo. ● Mic test Is your microphone working? Find out in five seconds. ● Voice recorder Press record, speak, and save an MP3 — nothing is uploaded. ❝ Japanese speech to text Japanese recordings and videos into a transcript and SRT subtitles, without the audio leaving your device. ✂ Trim audio Keep the part you want. Unlike video, the cut lands exactly where you put it. ♪ Video to MP3 The sound out of your video, as an MP3, made on your device. ♪ MP4 to WAV The sound of a video as an uncompressed WAV, extracted in your browser. ♪ Convert audio MP3, M4A or WAV, converted on your device and never uploaded. ◉ Drum machine Tap in a beat — sixteen steps, eight drums, instant playback. ▦ JSON to Excel JSON in, a real .xlsx out — rows, columns and sheets. ▦ CSV to Excel A proper .xlsx from your CSV, written on your device. ▦ Excel to CSV Your workbook as CSV files, read on your device. 字 Convert text encoding Fix a CSV that opens garbled, or save one in the encoding a system asks for. Detected automatically, converted in your browser. ☷ Create a ZIP Bundle files into one archive. Nothing is uploaded, so nothing has to be trusted. ☷ Extract a ZIP Open an archive and take out the files, on a device that has no unzip program. • EPUB to text Pull the words out of an ebook for reading, searching, note-taking or text-to-speech, without sending the book anywhere.

How the converters work

This site turns one file format into another and does the everyday jobs on sound and video: HEIC to JPG for iPhone photos, WebP and AVIF to JPG or PNG, MOV to MP4, audio to MP3, M4A or WAV, compressing and trimming videos, spreadsheets to and from CSV, subtitles, ZIP archives and text encodings.

Every conversion runs in your browser: the file is read and written again on your device and is never sent to a server. That is what makes it workable for the largest files people convert, phone videos and recordings of meetings, which would otherwise take minutes to upload. How fast it goes depends on your phone or computer rather than on a queue; Compress video uses the encoder already built into recent browsers, the one your device records video with.

The free plan needs no account and adds nothing to your files: 3 files per run (more where joining is the point, as in Merge videos), 20 MB per file, raised to 150 MB on the main video and audio tools, and 5 runs a day. Pro lifts those limits, by subscription or as a 24-hour pass.

Frequently asked questions

How do I open iPhone HEIC photos on Windows or send them through a form?: Convert them with HEIC to JPG, since JPG is accepted by every program and upload form, or with HEIC to PNG if you need PNG. The photos are decoded on your device. Location and camera details are not carried over into the new file.
Can I convert or shrink a video without uploading it?: Yes. Convert video to MP4 rewraps a MOV from a phone as an MP4 in seconds, without re-encoding, and Compress video makes an MP4 smaller for a message or an email limit. Both read MP4, M4V and MOV files, and both keep the video on your device from start to finish.
How do I get the sound out of a video as an MP3?: Video to MP3 saves a video’s sound track as an MP3. To change one audio format into another, such as M4A, WAV, FLAC or OGG into MP3, use Convert audio. Converting between compressed formats cannot add quality that was not there, so keep the original if you may need it again.
Why does Excel show strange characters in my CSV file?: Usually because the file is UTF-8 and Excel did not recognise it, so accented letters turn into symbols. Fix a garbled CSV for Excel adds the mark Excel looks for, and CSV to Excel writes a proper .xlsx instead. Convert text encoding handles older encodings as well.
How do I open a ZIP or a .tar.gz file without installing anything?: Extract a ZIP opens an archive in the browser and lets you save the files inside, including password-protected ZIP files if you know the password. Extract a .tar.gz does the same for the archives common on Linux, and Create a ZIP packs up to 20 files on the free plan.