Free file tools

Inspect and extract a zip, read a file’s metadata, encrypt a file with a password, verify a hash, view the raw bytes, and hide a message in a picture. Files are read on your device.

Audio Spectrum Analyser — Draw the frequency content of an audio or video file and read off where it stops. A lossy encoder throws away everything above a cutoff, and that cutoff is visible — so a file converted to 320 kbps from a 128 kbps source shows a wall at 16 kHz. Analysed in your browser; nothing is uploaded.
File Encryptor — Encrypt any file with a password using AES-256-GCM (with a PBKDF2-derived key), then decrypt it later with the same password. The file and password never leave your browser — real, standard cryptography on your device.
Create a ZIP — Bundle files into one .zip on your device — properly compressed, Arabic filenames intact, and an honest answer about why there is no password option. Free, and nothing is uploaded.
Archive Inspector — Peek inside a .zip and other archives in your browser — detect the format and list every entry with sizes and dates, without extracting or uploading.
File Metadata — Reveal a file’s metadata in your browser — size, image dimensions, camera EXIF with GPS, PNG text, PDF info and media tags. Nothing is uploaded.
Video to GIF — Turn a clip into an animated GIF without uploading it anywhere. Choose the start, length, frame rate, width and colour count. All frames share one palette so the animation does not flicker the way cheap converters make it, and it tells you when the file has grown past the point anyone will wait for it.
Hex Viewer — Open any file and look at its actual bytes, with the printable characters alongside so embedded strings stand out. It reads the magic number to say what the file really is, and tells you when the extension and the contents disagree. Search for text or bytes, and jump to any offset.
Audio Trimmer — Open an MP3, M4A, WAV, OGG or FLAC, drag across the waveform to pick the part you want, listen back, and save just that. A short fade at each end stops the cut clicking. Nothing is uploaded.
Extract Audio from Video — Pull the soundtrack out of an MP4, MOV, WebM or MKV and save it as an audio file. The video is decoded in your browser — never uploaded, never watched, and only the audio track is read.
Video Editor — Crop a video to the shape a platform wants, join a few clips end to end, and put a caption on top — all in your browser, with nothing uploaded. It shows you what a crop costs before you commit to it: going from a 16:9 recording to a 9:16 post keeps under a third of the picture, and whatever you filmed is rarely in the middle of what is left, so you drag to choose. Captions are drawn with this page’s own fonts, so Arabic joins up and runs right to left, and the preview is the export rather than an approximation of it. You can also draw a box over anything that should not be in the picture — a face, a plate, a name on a screen — and each box carries its own settings: pixelate, solid or blur, with what that choice costs written next to it. Pixelating a video gives the detail back — the mosaic grid stays still while your subject moves through it, and 64 frames of that recover 98.6% of a number plate — so solid is one tap away. The sound is copied across untouched rather than re-encoded, so it loses nothing.
Video Stabilizer — Handheld video shakes, and every tool that fixes it wants your file on somebody else’s server first. This measures how the camera actually moved — a grid of points tracked from frame to frame, so a person walking through the shot does not drag the estimate after them — smooths that path, and slides each frame back under it. What it will not do is pretend the correction is free: sliding a frame back means its far edge slides out of the picture, so a stabiliser always crops, and this one works out how much from YOUR clip and shows the figure before you commit rather than making you pick a percentage in advance. One slider re-prices the trade instantly, because the clip is only measured once. It can also hold a moving SUBJECT in the middle instead of the camera: drag a box around it, and the frame follows it — which costs far more picture, and the figure says how much before you commit. The sound is copied across untouched rather than re-encoded, so it loses nothing.
Video Trimmer — Trim an MP4 or MOV in your browser by copying its frames rather than re-encoding them — so the output is the same video at the same quality, and a half-hour recording trims in seconds instead of minutes. The start of a cut snaps to the nearest keyframe, which the tool shows you on the timeline. Nothing is uploaded.
Compare Spreadsheets — Compare two versions of the same spreadsheet — CSV or Excel — and see which rows were added, removed or changed, and exactly which cell changed in each. Rows are matched on a key column rather than their position, because by the time you need a diff somebody has already sorted or inserted something. Duplicate keys are reported instead of quietly picking one.
Remove Silence — Cut the silence out of an audio recording — the pauses in a lecture, the gaps in an interview, the dead air at the start. Set how quiet counts as silent and how long a gap has to be, and see exactly what will go before it goes. A margin is kept at each edge so a breath before a word survives, because a cut made exactly on the silence sounds chopped.
Split a CSV — Break one big spreadsheet into several smaller CSVs — by row count, by file size, or one file per value in a column, so a staff list becomes one file per department. Every part keeps the header row, and a byte-order mark is added by default so Excel reads Arabic correctly instead of turning it into mojibake. Downloads as a zip.

Free file tools

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