Browse the toolkit

Files tools

71 focused tools, ready to use in your browser.

Files

Text File Encoding Converter

Decode a local text file with an explicit charset and export UTF-8 with chosen BOM and newline handling.

Files

File Hash Verifier

Hash exact local file bytes with SHA-2 and optionally compare a supplied expected digest.

Files

File Type Inspector

Inspect a bounded file header for a small signature allowlist without executing or decompressing it.

Files

Binary Hex Viewer

Display a bounded byte slice with hexadecimal offsets, hex values and an escaped ASCII view.

Files

Binary File Split and Join

Split local bytes into stored ZIP parts with a hash manifest, or concatenate an explicit ordered file selection.

Files

GZIP File Converter

Compress a local file to GZIP or decompress a GZIP stream with a strict streaming output cap.

Files

Binary File Comparator

Compare two local files byte-for-byte, reporting lengths, total mismatches and bounded differing offsets.

Files

ZIP File Workbench

Create a ZIP, list safe entries or extract one file under strict expansion bounds.

Files

Data URL Workbench

Encode local file bytes as a data URL or decode a pasted data URL into a file.

Files

Detached File Signature Workbench

Sign exact local file bytes or verify a detached signature with a supplied JWK.

Files

Record-aware File Splitter

Split a UTF-8 CSV or NDJSON file into independently readable record parts in a stored ZIP.

Files

Local Duplicate File Finder

Group selected files by size and SHA-256, then compare matching bytes before reporting duplicates.

Files

Checksum Manifest Workbench

Create or verify explicit SHA-256/SHA-512 filename manifests against selected local files.

Files

Batch Filename Copy Renamer

Export selected files with generated numbered names in a stored ZIP while preserving the originals.

Files

Windows Export Path Checker

Inspect supplied relative path strings for a conservative Windows export naming profile.

Files

vCard4 File Workbench

Inspect, unfold or normalize a bounded UTF-8 vCard4 file while retaining unknown property lines.

Files

iCalendar File Inspector

Inspect bounded VCALENDAR components and event property lines without expanding recurrence or alarms.

Files

OPML2 Outline Workbench

Inspect an OPML2 outline file or generate a safe outline document from a declared JSON tree.

Files

Bookmark File Organizer

Inventory or sort a bounded exported bookmark HTML file without opening any stored destination.

Files

GPX Track Inspector

Inspect bounded GPX1.1 track,route and waypoint coordinates or export a segment-preserving GeoJSON copy.

Files

Printable Label Sheet Generator

Print original text or QR payload labels on A4,Letter or custom sheets with explicit stock geometry and slot coordinates.

Files

Offline HAR Timing and Redaction Analyzer

Summarize HAR1.2 request phases or export an allowlisted copy without headers, cookies or bodies.

Files

Intel HEX Firmware Record Workbench

Validate Intel HEX records, normalize record layout or export a bounded address-span binary.

Files

Binary Record Pack and Unpack Workbench

Pack or unpack fixed binary fields using an explicit offset and endian JSON schema.

Files

Torrent Metadata and Info-hash Inspector

Inspect bounded BEP3 v1 torrent metadata and hash the original bencoded info dictionary.

Files

Local Unified Patch Workbench

Inspect ordinary unified text patches or atomically apply exact hunks to a virtual JSON file map.

Files

Git Loose Object Inspector

Inflate a bounded zlib Git loose object and compute its exact SHA1 or SHA256 object identifier.

Files

Media Chapter File Builder

Build WebVTT chapter cues or FFmetadata chapter blocks from explicit titles and integer millisecond boundaries.

Files

CSV Data Package Bundle Builder

Bundle original CSV files with a Frictionless v1 descriptor, explicit string schemas and exact-byte hashes.

Files

Selected File Set Change Auditor

Compare two selected file sets using exact names, SHA-256 and byte verification, with unambiguous content-move evidence.

Files

Local MIME Message File Builder

Create a UTF-8 plain-text EML file with bounded attachments and encoded Unicode headers, without sending mail.

Files

Strict Ustar Archive Workbench

List an uncompressed ustar archive, extract one regular member or create a separate bounded ustar file.

Files

EPUB Package Reference Reviewer

Inspect a bounded EPUB ZIP’s mimetype, container, manifest, fallback and spine references without opening publication content.

Files

Classic PCAP Capture Inspector

Inspect classic PCAP packet lengths and exact timestamp fields, or extract one captured payload as a separate binary file.

Files

OpenType Font File Inspector

Read a TTF/OTF table directory, checksums, selected naming records and basic font-unit metadata without loading the font.

Files

glTF and GLB Resource Inspector

Inspect a glTF 2.0 JSON or GLB file, its buffer ranges, node hierarchy and inert image-resource references.

Files

SQLite Snapshot Schema Inspector

Read schema objects and selected file-header metadata from a bounded standalone SQLite rollback-journal snapshot without executing SQL.

Files

Java Class File Metadata Inspector

Read a .class file’s declared version, class names, fields, methods and opaque attribute ranges without loading bytecode.

Files

Git Index File Inspector

Inspect a copied Git index file’s paths, merge stages, object IDs and checksum without opening or changing its repository.

Files

Guarded File Byte Patch

Check expected original bytes and optional SHA-256 before downloading a separate equal-length patched copy.

Files

DOCX Revision Source Inventory

List selected WordprocessingML revision elements, literal author/date attributes and bounded excerpts from local DOCX parts.

Files

Document Source Text Exporter

Export bounded DOCX main-story paragraphs and source tables or ordered EPUB XHTML spine text, with explicit hidden, revision and omitted-content limits.

Files

GEDCOM 7 Family Link Auditor

Inspect selected INDI/FAM pointers in an actual local GEDCOM 7 source file, preserving line evidence and separating missing targets from review observations.

Files

RIS Library Overlap Auditor

Find candidate equal-key citation records across local RIS files while preserving repeated fields, original records and file provenance.

Files

Local Notebook Output Clearer

Clear stored code-cell outputs and execution counters from a small local ipynb while preserving every other original JSON byte.

Files

Selected SCORM Package Launch Audit

Inspect selected SCORM 2004 organization, resource and local launch-file relationships in a small ZIP without running learning content.

Files

Directory Tree Artifact Builder

Create a README-ready Unicode or ASCII directory tree and inventory from an explicit relative-path list.

Files

Exact-size Test File Generator

Generate a real local binary test file with an exact byte count, explicit contents and a SHA-256 checksum.