Convert files without uploading them.

iPhone photos

Convert iPhone HEIC photos to JPG in batches, with EXIF removed.

Image formats

Re-encode JPGs as lossless PNGs in your browser.

Image formats

Convert PNGs to JPGs with a quality dial. Any transparency is flattened onto white.

Image formats

Turn WEBP images into PNGs, with transparency kept, for programs that still do not open WEBP.

Image formats

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

Image formats

Turn AVIF images into JPGs, which are widely supported where AVIF still is not.

Drawings

Render an SVG to a PNG at the size it declares or up to four times larger, with transparency kept.

Drawings

Turn an SVG into a JPG at the quality you choose, with transparency flattened onto white.

iPhone photos

Save iPhone HEIC photos as PNG files for editing. PNG adds no lossy encoding step.

Image formats

Turn a WEBP that an upload form or older program refuses into a JPG, with a quality setting and transparency flattened onto white.

Image formats

Encode JPG photos as WEBP for the web, and compare each file's size before and after.

Code reader

Read what a QR code says before you act on it. The full text or address is shown in this tab, and nothing is opened for you.

Documents

Turn each PNG into a one-page PDF. Compatible PNGs go in without re-encoding, and the result row notes any file that is re-encoded.

Documents

Put each photo in its own PDF, with EXIF removed and each page following the photo's orientation tag. Compatible JPEGs keep their compressed image data; other supported JPEGs are re-encoded, and their rows say so.

Documents

Turn each HEIC file into its own PDF, with a page for each image it holds.

Documents

Put a WEBP image in a one-page PDF with its transparency kept.

Documents

Render an SVG drawing at the scale you choose, on a PDF page sized to its declared dimensions.

Documents

Combine PDFs into one file in the order you set. Page content, fonts and images keep their bytes, and the document structure around them is rebuilt. Protected files are refused by name.

Documents

Turn a PDF into a Markdown file, with headings from its tags or bookmarks, lists from its tags, and a report on what each page held.

Documents

Save each page of a scanned PDF as a PNG image, at the resolution the file stores.

Documents

Turn a scanned PDF into one JPG per page. A JPEG the page stores comes out as it is.

Documents

Turn a Markdown file into a PDF with selectable text, clickable links and a bookmark for every heading.

Audio

Convert voice memos and other M4A/AAC audio to MP3 and choose a bitrate setting.

Audio

Shrink large WAV recordings into small MP3s with a bitrate dial.

Audio

Save the audio track of your own MP4, MOV or WebM video as an MP3.

Audio

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

Audio

Change pitch and speed separately: shift a song's key without changing its length, or slow it down without changing its key.

Audio

Cut a ringtone from a song, preview its loop seam and export an MP3. Optional zero-crossing snapping can reduce click risk.

Audio analysis

Decode a recording of Morse code to text. The tone, speed and timing are measured from your file.

Audio analysis

Find a song's tempo in BPM from its beat spacing. When half or double that tempo also fits, that reading is shown beside the answer.

Audio analysis

Turn a solo melody into a MIDI file, one line at a time, with each note's tuning and confidence shown.

Audio analysis

Find a song's musical key. The runner-up key and the margin between them are shown too, because a major key and its relative minor share all seven notes.

Video

Turn a few seconds of your own video into a GIF, with controls for the clip, width and frame rate.

Video

Seek to a moment and save that frame, or sample frames across a clip, as PNG or JPEG at the video's own dimensions.

Video

Strip the sound out of an MP4, M4V or MOV by rewriting its index. The picture is copied across untouched, without re-encoding.

3D printing

Open an STL file to see a rotatable preview, its triangle count and its bounding box.

3D printing

Turn a 3MF from your slicer into an STL. The result shows the unit the file uses and the scale factor applied.

3D printing

Turn a photo into a lithophane STL, with a preview of its modeled tones and a count of the thickness steps your settings allow.

Methodology

Where each tool processes files, which tools download extra code, and how to check network activity and offline use yourself.