File Tools
Inspect any file in your browser: identify the type from its bytes, view a hex dump, list a ZIP's contents, measure entropy, extract strings and verify checksums. Nothing is uploaded.
Base64 File Encoder
Encode any file to Base64 and a data URI in your browser. Drop a file to get the raw Base64 and a ready data: URI to copy. Nothing is uploaded.
CBOR Decoder
Decode a CBOR file (RFC 8949) to readable JSON in your browser. Handles integers, byte strings, arrays, maps, tags, and floats. Nothing is uploaded.
CSV File Inspector
Inspect a CSV file in your browser: detect the delimiter, encoding and BOM, count rows and columns, guess the header, and preview sample rows. Private.
ELF Header Inspector
Drop a Linux or Unix binary to read its ELF header: 32 or 64-bit, endianness, file type, CPU architecture, OS ABI and entry point. Runs in your browser.
EML Email Parser
Open an .eml email file in your browser to read the From, To, Subject, and Date headers, list attachments, and preview the message body. Private, no upload.
File Checksum Verifier
Verify a download's checksum in your browser. Drop in a file, get its SHA-1, SHA-256 and SHA-512, and paste the expected hash to confirm a match. Private.
File Entropy Calculator
Calculate the Shannon entropy of any file in your browser to spot compressed or encrypted data. Get bits per byte, a 0 to 8 gauge and a plain reading.
File Type Identifier
Find out what a file really is from its magic bytes, not its extension. Detects images, audio, video, archives, fonts, and more in your browser. Private.
Gzip Inspector
Inspect a .gz file's gzip header and footer in your browser: original filename, original and compressed size, ratio, OS, and date, without decompressing.
Hex Viewer
View any file as a classic hex dump in your browser: byte offsets, two-digit hex, and an ASCII gutter side by side. Nothing is uploaded. Copy the dump.
ICS Calendar Parser
Open an ICS or iCalendar file in your browser to list every event with its title, date and time range, location, organizer and status. Private, no upload.
Java Class File Info
Find which Java version compiled a .class file. Reads the major and minor version bytes in your browser to show the Java release, JDK name and more.
JSON File Validator
Validate a JSON file in your browser, pinpoint syntax errors by line and column, and analyze its structure: depth, keys, value types, and size. Private.
MessagePack Decoder
Decode a MessagePack file to readable JSON in your browser. See arrays, maps, ints, floats, and binary blobs. Nothing is uploaded. Copy the JSON output.
NDJSON / JSONL Validator
Validate an NDJSON or JSONL file in your browser. Parse every line as JSON, see valid, invalid, and blank counts, and get the line number for each error.
PE Header Inspector
Inspect a Windows EXE or DLL header in your browser: architecture, 32 vs 64-bit, subsystem, section count, link timestamp, and characteristics. Private.
PEM File Decoder
Decode a PEM file in your browser. Find every BEGIN/END block, read its label, and Base64-decode the body to show its byte size. Nothing is uploaded.
PO File Parser
Parse a Gettext PO or POT file in your browser: see translation progress, translated, untranslated and fuzzy counts, the language, and every string. Private.
Protobuf Decoder
Decode raw Protocol Buffers wire format in your browser with no .proto schema. See every field number, wire type, and value. Nothing is uploaded.
SQLite Database Info
Read a SQLite database header in your browser: page size, page count, file size, text encoding, versions, user and application id, and WAL mode. Private.
Strings Extractor
Extract readable text from any binary file in your browser, like the Unix strings command. See each printable run with its byte offset, set a minimum length.
TAR Contents Viewer
List the files inside a .tar archive in your browser: name, size, and type from each header, plus totals. Nothing is uploaded and nothing is extracted.
Text Encoding Detector
Detect a text file's encoding from its bytes: UTF-8, UTF-16, UTF-32, ASCII or Latin-1, plus BOM and line endings. Runs in your browser. Nothing uploaded.
Text File Statistics
Get word, line, character, and byte counts for a text file in your browser, like wc. Detects line endings, blank lines, the longest line, and a BOM. Private.
Torrent File Parser
Open a .torrent file in your browser to see its name, total size, file list, piece info, trackers, and creator. Bencode decoded locally, never uploaded.
TTF/OTF Font Inspector
Inspect a TTF or OTF font in your browser: format, family and style names, version, units per em, glyph count, and the full sfnt table list. Private.
vCard Parser
Parse a .vcf vCard file in your browser to read its contacts: names, phone numbers, emails, organization, title, and more. Handles many cards. Private.
WASM Module Inspector
Inspect a WebAssembly .wasm file in your browser. See the version, every section with its size and offset, and the imports and exports. Private, no upload.
ZIP Contents Viewer
List everything inside a ZIP file in your browser: names, sizes, compressed sizes and compression method. It reads the archive without extracting it. Private.