Tool category
File Tools
Inspect, organize, convert, and prepare everyday files in your browser.
Available tools
Archive Creator and Extractor
Create and extract ZIP, TAR, and TGZ archives locally, with folder preservation and safe path validation.
Single File Compressor
Compress or decompress individual files with gzip, Brotli, or Zstandard using browser-native streams or lazily loaded local codecs.
File Encryptor and Decryptor
Encrypt and decrypt local files with password-derived AES-GCM keys, authenticated metadata, and no uploads.
File Splitter and Joiner
Split a large file into numbered chunks of a chosen size and reassemble a complete ordered chunk set locally.
Duplicate File Finder
Find exact duplicate files in a selected folder by grouping sizes and confirming matches with local cryptographic hashes.
Folder Size Analyzer
Analyze a selected folder and visualize which subfolders and file types consume the most space without uploading names or contents.
Folder Comparison Tool
Compare two selected folder trees by relative path, size, and optional hash to report added, missing, and changed files.
Folder Inventory and Tree Exporter
Build a browsable folder tree and export a CSV or JSON inventory containing paths, sizes, types, and modification dates.
Batch File Renamer
Preview batch filename changes using replacement, numbering, case, prefix, suffix, and date rules, then download the renamed files as an archive.
File Type Detector
Identify a file's likely format from its signature bytes and compare the result with its extension and declared MIME type.
Binary File Analyzer
Inspect a local file with a paged hex view, byte-frequency chart, entropy readings, and printable-string extraction.
Binary File Diff
Compare two binary files byte by byte and navigate differing offsets with hexadecimal and text context.
Checksum Manifest Tool
Create SHA checksum manifests for multiple files or verify selected files against an existing checksum manifest entirely locally.
Text File Encoding Converter
Detect likely text encodings, preview decoding issues, and convert local text files among UTF-8, UTF-16, and supported legacy encodings.
Line Ending Converter
Inspect and convert text-file line endings among LF, CRLF, and CR while preserving the remaining file content.
Large Text File Viewer
Open, page through, and search large local text or log files in chunks without loading the entire file into memory.
CSV Viewer and Profiler
View large CSV files in a virtualized table and profile column types, missing values, unique counts, and numeric ranges locally.
CSV Cleaner
Clean CSV data by trimming fields, normalizing empty values, fixing uneven rows, and reporting malformed records before export.
CSV Column Manager
Select, rename, reorder, duplicate, or remove CSV columns and export the transformed dataset locally.
CSV Row Filter
Filter CSV rows with multiple text, numeric, date, blank-value, and regular-expression conditions in the browser.
CSV Sorter
Sort CSV records by one or more columns with explicit text, numeric, date, case, and empty-value handling.
CSV Deduplicator
Remove duplicate CSV records using selected key columns, configurable normalization, and first-or-last record retention.
CSV Merger
Append or key-join multiple CSV files with column mapping, unmatched-row reporting, and local export.
CSV Splitter
Split a CSV into downloadable files by row count, approximate output size, or the values in a selected column.
Fixed Width to CSV Converter
Define or detect fixed-width text columns, preview parsed records, and export them as correctly quoted CSV.
JSON Lines Toolkit
Validate, browse, filter, and convert newline-delimited JSON files to JSON arrays or CSV without executing their contents.
SQLite File Browser
Open a local SQLite database with browser-side WebAssembly to inspect its schema, browse tables, run read-only queries, and export results.
DBF File Viewer
Inspect dBASE DBF field definitions and records locally, choose the text encoding, and export selected data as CSV.
Parquet File Viewer
Inspect Parquet schemas, row groups, and selected records locally with a lazily loaded browser-compatible reader and CSV export.
Avro File Viewer
Read Avro object container files locally, display their schema and records, and export selected rows as JSON.
Spreadsheet Sheet Splitter
Split an XLSX workbook into separate downloadable workbooks by worksheet while preserving supported values, formulas, and styles.
Spreadsheet Workbook Merger
Combine selected worksheets from multiple XLSX files into one workbook with previewed naming-conflict handling.
Spreadsheet Formula Inspector
Inventory formulas in an XLSX workbook, group repeated patterns, flag formula inconsistencies, and export a review report.
Spreadsheet External Link Finder
Scan XLSX package relationships and formulas for external workbook links, list their locations, and produce a local audit report.
EPUB Reader
Open an EPUB locally with chapter navigation, table of contents, search, and adjustable reading controls.
EPUB Metadata Editor
Edit supported EPUB title, creator, language, publisher, identifier, date, description, and cover metadata, then save a valid copy.
Font File Inspector
Inspect local TTF, OTF, WOFF, and WOFF2 font metadata, tables, variable axes, licensing fields, and supported character ranges.
Font Subsetter
Create a smaller font containing only glyphs required by pasted text or selected Unicode ranges using a local browser/WASM subsetter.
Font Format Converter
Convert supported fonts among TTF, OTF, WOFF, and WOFF2 locally while clearly reporting unsupported font features.
EML Email Viewer
Parse an EML file locally to show headers, text and sanitized HTML bodies, MIME parts, and downloadable attachments.
MBOX Mailbox Extractor
Index a local MBOX mailbox, filter messages by common headers, and export selected messages as individual EML files.
ICS Calendar File Viewer
Parse an ICS file locally and display events, recurrence details, time zones, alarms, and validation warnings in calendar and list views.
Calendar File Merger
Merge multiple ICS calendars, detect duplicate event identifiers, choose conflict outcomes, and download one consolidated calendar.
VCF Contact File Viewer
Open vCard files locally, browse contact fields and embedded photos safely, and export selected contacts as CSV.
Contact File Merger
Combine multiple VCF files, identify likely duplicate contacts by selected fields, resolve matches, and export a consolidated vCard file.
GPX Route Viewer
Visualize GPX tracks and waypoints locally with a coordinate plot, elevation profile, distance, pace, and segment statistics.
KML and KMZ Viewer
Open KML or KMZ files locally to inspect placemarks, paths, polygons, folders, styles, and embedded assets.
GeoJSON File Viewer
Validate and render GeoJSON features locally with property inspection, bounding-box statistics, filtering, and corrected-file export.
Shapefile Viewer
Load matching SHP, SHX, DBF, and optional PRJ files locally to visualize geometry, inspect attributes, and export GeoJSON.
Subtitle Format Converter
Convert subtitle files among SRT, WebVTT, ASS, and supported plain-text formats while preserving timing and basic styling where possible.
Subtitle Timing Editor
Shift, stretch, and repair subtitle cue timings with overlap detection, frame-rate conversion, preview, and local download.
M3U Playlist Editor
Open M3U and M3U8 playlists locally to reorder entries, edit metadata and paths, remove duplicates, and export a corrected playlist.
Torrent Metadata Viewer
Decode a torrent metadata file locally to show its info hash, trackers, file tree, piece settings, creation details, and validation warnings.
HAR File Analyzer
Analyze a local HTTP Archive file for request timing, transfer size, status, domains, cache behavior, and slow-resource bottlenecks.
HAR Privacy Sanitizer
Remove or redact selected cookies, authorization headers, query values, form data, response bodies, and other secrets from a HAR file.
STL File Viewer
Preview ASCII or binary STL models locally and report dimensions, triangle count, surface area, volume, and common mesh problems.
G-code File Analyzer
Visualize common 3D-printer G-code layers locally and estimate movement distance, extrusion, print time, filament use, and temperature changes.
MIDI File Inspector
Inspect a Standard MIDI File locally with track, channel, tempo, time-signature, instrument, note-range, and event summaries.
Office Document Metadata Inspector
Inspect DOCX, XLSX, and PPTX package metadata, authorship fields, revision dates, comments, custom properties, and embedded-file listings locally.
Windows Shortcut File Inspector
Parse Windows LNK files locally to display target paths, arguments, working directories, timestamps, icon locations, and suspicious-link warnings.