Convert files without uploading them.

iPhone photos

Convert supported HEIC photos to JPG in batches, with EXIF removed. For offline use, prepare the decoder with an online conversion first.

Image formats

Re-encode JPGs as lossless PNGs locally — nothing leaves your device.

Image formats

Shrink PNGs into JPGs with a quality dial, transparency flattened onto white — all in-browser.

Image formats

Turn WEBP images into PNGs — widely supported where WEBP still is not — converted locally, never uploaded.

Image formats

Convert supported AVIF images to PNG in your browser, including images with transparency.

Image formats

Turn AVIF images into JPGs — widely supported where AVIF still is not — in your browser.

Drawings

Render an SVG to a PNG at the size it declares, or up to four times it — transparency kept, drawn by your browser, never uploaded.

Drawings

Render an SVG to a JPG at the quality you choose — transparency flattened onto white, drawn by your browser, never uploaded.

iPhone photos

Convert supported HEIC photos to PNG. PNG adds no lossy encoding step, but decoding and canvas conversion can change colour, precision and translucent pixels.

Image formats

Convert supported WEBP images to JPG, with a quality setting and transparency flattened onto white.

Image formats

Encode JPG photos as WEBP, then compare the output's size and appearance.

Code reader

Read a QR code's full decoded text or address in this tab, without opening it. Check addresses yourself; type labels and warnings do not verify the destination.

Documents

Compatible PNG image streams pass through to the PDF; other supported PNGs are decoded and re-encoded, with conversion notes on the result row.

Documents

Compatible JPEG image data passes through after header stripping; other supported JPEGs are re-encoded and noted. Placement follows available orientation tags.

Documents

Convert supported images within each HEIC file to pages in a separate PDF. Selecting several files does not merge them.

Documents

Put a WEBP image in a PDF — decoded by your browser, transparency kept, never uploaded.

Documents

Turn an SVG drawing into a one-page PDF at the size it declares — rendered in your browser at the scale you choose, never uploaded.

Documents

Combine PDFs in the order you set. Retained content, image and font streams keep their bytes, but the PDF structure is rebuilt — protected files refused by name.

Audio

Re-encode supported M4A/AAC audio, including voice memos, as MP3 in your browser.

Audio

Shrink huge WAV recordings into small MP3s with a bitrate dial — all in-browser, nothing leaves your device.

Audio

Pull the audio track out of your own video files as an MP3 — the video itself never travels anywhere.

Audio

Put several tracks end to end into one MP3, in an order you set, with an optional crossfade at each seam.

Audio

Move pitch and speed independently: change pitch without changing duration, or change speed while retaining the selected pitch.

Audio

Cut a ringtone with optional nearby zero-crossing search to reduce click risk. A “zero-cross search shift: 0 samples” label at a source boundary does not verify a crossing. Preview the sample seam before MP3 export; clicks can remain, including in stereo.

Audio analysis

Drop a recording of morse code and read it back as text — the tone, speed and timing measured from your file, decoded entirely in this tab.

Audio analysis

Drop a song and read its tempo — the beat spacing measured in this tab, with the half or double reading it cannot rule out named beside the answer.

Audio analysis

Transcribe a solo melody to MIDI with tuning estimates and confidence scores. Detected mixtures or insufficiently periodic sound may be refused; the checks can miss chords.

Audio analysis

Drop a song and read its musical key — with the runner-up key and the margin between them printed beside it, because a key and its relative minor share all seven notes.

Video

Turn a few seconds of your own video into a GIF — clip, width, and frame-rate controls, all in-browser.

Video

Save a still or sample a clip at native dimensions. Rows show browser-reported frame times when available, or target times labeled unmeasured. Sampling rate and JPEG quality are requested settings, not output measurements.

Video

Strip the sound out of an MP4, M4V or MOV by rewriting its index — the picture is copied across untouched, never re-encoded.

3D printing

Open an STL and see it: triangle count, bounding box and a rotatable preview, measured in your browser and never uploaded.

3D printing

Export supported 3MF geometry as STL. The declared or default unit and selected scale factor are shown with the result.

3D printing

Generate a lithophane STL from a photo, with a modeled tone ladder and nominal layer-step estimate. Printed results depend on the printer, material and settings.

Methodology

Processing paths, required downloads, and the limits of network meters and offline checks.