File & Format

Pretty-print and normalise a .bib file.

Compare two binary files byte-by-byte.

Keep selected CSV columns by name or index.

Compare two CSV files by rows or a key column.

Render any CSV as a printable, paginated PDF table.

Bulk-create calendar events from a CSV.

Extract visible text from a .docx file.

Read the ELF header: class, endianness, type, machine, entry point.

Read EPUB metadata, TOC, file list and cover image without unpacking the body.

Read title, creator and publisher metadata from EPUB files.

Break down Excel formulas into readable function notes.

Shannon entropy of a file — detect encryption / compression.

Compute MD5, SHA-1, SHA-256, SHA-384 and SHA-512 for any file.

Decode the header of a .gz or .bz2 file.

Classic 16-byte-per-line hex + ASCII dump of any file.

Strip HTML tags and render the visible text as a paginated PDF.

Generate a basic .ics calendar event.

Turn an image — or a zip of images — into a single PDF, one image per A4 page.

Show the major/minor version of a compiled Java .class file.

Convert newline-delimited JSON to an array and back.

Convert between JSON Lines (NDJSON) and a JSON array.

Parse a KML or GPX track or waypoint file and list its points.

Parse an LRC lyric file with timed [mm:ss.ms] lines and metadata tags.

Parse an M3U or M3U8 playlist into track entries.

Inspect a macOS Mach-O header: magic, CPU type and file type.

Decode magnet URI parameters into readable fields.

Render any Markdown text into a styled, paginated PDF.

Parse a Standard MIDI File header — format, tracks, ticks per quarter, tempo.

Identify a file's real type by its magic bytes, not its extension.

Read title, artist, album, year and genre from an MP3's ID3v2 tag.

Pull every embedded raster image out of a PDF and download them as a zip.

Combine multiple PDFs into a single document.

View a PDF's title, author, dates, page count and encryption status.

Rotate every page (or one page) of a PDF by 90/180/270°.

Redact text matching regex patterns (SSNs, emails, phone) across every PDF page.

Split a PDF into per-page or per-range files.

Extract plain text from any PDF, page by page.

Stamp a diagonal text watermark across every page.

Inspect a Windows PE (.exe / .dll) header: machine, subsystem, time stamp.

Connect to SFTP, FTP or FTPS servers and manage files — browse, upload, download, rename, delete and create folders.

Convert SubRip (.srt) subtitles into WebVTT (.vtt).

Shift every timestamp in an SRT or VTT subtitle file by N seconds.

Read the table of contents of a .tar archive.

Generate a vCard or parse common vCard fields.

Read sample rate, channels, bit depth and duration of a WAV file.

Flatten repeated XML elements into CSV rows.

Peek inside a ZIP without extracting — list every entry, size and CRC.