File Viewers

Drop any file to look inside it, with the right viewer picked for you.

Browse JSON as a collapsible tree and find syntax errors down to the line.

Check YAML for indentation and syntax errors and explore it as a tree.

Check that XML is well-formed and browse elements and attributes as a tree.

Validate TOML config files and see their structure as a tree.

Highlight, validate and format SQL for MySQL, PostgreSQL, SQLite and more.

Read Markdown files rendered, with the source side by side.

Open source code and text files with syntax highlighting, search and line numbers.

Open CSV, TSV and Excel files as a sortable, filterable table.

View OBJ, STL, glTF, GLB, FBX, PLY, 3MF and DAE models in your browser.

Inspect STL files before printing: dimensions, volume, and holes in the mesh.

Preview TTF, OTF, WOFF and WOFF2 fonts: every glyph, features and variable axes.

Compare up to four fonts side by side or overlaid, with their metrics.

Look at the raw bytes of any file, with search and a data inspector.

Look inside ZIP, TAR and GZ archives and open single files without extracting.

See GPS tracks and GeoJSON shapes with distance, elevation profile and stats.

See the waveform and spectrogram of any audio file and measure its loudness.

Decode PEM and DER certificates and CSRs: subject, validity, SANs and fingerprints.

Decode JSON Web Tokens, check expiry and verify the signature.