Local File Tools
Inspect, verify and transform selected files directly in your browser without uploading their contents or using downloader workers.
Private GeoJSON Text Sequence Exporter
Export each validated feature as an individually framed GeoJSON text record for line-oriented and streaming pipelines, with RFC 8142 record separators and no upload.
Open tool →Private Image Editor
Resize, rotate, mirror and tune an image in one local workspace, then export a metadata-free PNG, JPEG or WebP copy.
Open tool →Private Image Barcode & QR Reader
Read QR codes and common one-dimensional or two-dimensional barcodes from a local image with the browser's native detector and no image upload.
Open tool →Private SRT & WebVTT Subtitle Converter
Convert an SRT or WebVTT subtitle file to a chosen standard format, normalize cue timestamps and download UTF-8 output without uploading captions.
Open tool →Private Browser Audio Merger
Join up to ten browser-decodable audio files in their selected order and download one standards-based PCM WAV without uploading the recordings.
Open tool →Private Audio to MP3 Converter
Convert a short browser-decodable audio file to MP3 at a chosen bitrate and channel layout without uploading it.
Open tool →Private Video to MP3 Audio Extractor
Decode the audio track of a short browser-playable video and encode it as MP3 without uploading the clip.
Open tool →Private Audio to Lossless FLAC Converter
Decode a short browser-playable audio file and write a real 16-bit lossless FLAC stream locally with explicit sample-rate and channel controls.
Open tool →Private Video to Lossless FLAC Audio Extractor
Decode the audio track of a short browser-playable video and preserve it as a real 16-bit lossless FLAC file without uploading the clip.
Open tool →Private Browser Audio Splitter
Split one browser-decodable audio file at an exact time and download two PCM WAV parts in a ZIP archive without uploading the recording.
Open tool →Private Audio to WAV Converter
Decode a browser-supported audio file, optionally change its sample rate or channel layout, and download a PCM WAV without uploading the source.
Open tool →Private Opus Audio Compressor
Compress a short browser-decodable audio file to Opus in a WebM container at an explicit target bitrate without uploading the recording.
Open tool →Private MP4 Container Inspector
Inspect MP4 brands, box structure, tracks, codecs, duration, average frame rate and approximate bitrate from bounded local slices without uploading media bytes.
Open tool →Private MP3 Tag Editor
Edit title, artist, album, year, track, genre and comment fields in an MP3 without uploading the audio or contacting a metadata service.
Open tool →Add Cover Art to MP3
Embed one verified PNG or JPEG as the front cover of an MP3 entirely in the browser, replacing existing embedded artwork but preserving other tags.
Open tool →Remove Embedded Cover from MP3
Remove every embedded ID3 picture from a local MP3 while preserving its text tags and audio bytes, with no upload.
Open tool →Private AVIF to JPG Converter
Decode a browser-supported AVIF image and create a compact RGB JPEG copy locally, with transparent pixels composited onto white and no source upload.
Open tool →Private AVIF to PNG Converter
Decode a browser-supported AVIF image and export a pixel-preserving PNG copy locally, without uploading the original or retaining its metadata.
Open tool →Private XLSX to CSV Converter
Export the first worksheet of a bounded Excel XLSX workbook to standards-safe CSV locally, without uploading data or executing workbook logic.
Open tool →Private XLSX to JSON Converter
Convert the first worksheet of a bounded Excel XLSX workbook into structured JSON locally, with deterministic headers and no spreadsheet execution or upload.
Open tool →Private XLSX Spreadsheet Viewer
Preview a bounded Excel XLSX worksheet locally without uploading the workbook, executing formulas, macros, external links or embedded content.
Open tool →Private Spreadsheet Viewer
Preview an XLSX, CSV or TSV spreadsheet locally with bounded rows and columns, without uploading data or evaluating formula-like cells.
Open tool →Private Parquet File Viewer
Inspect a bounded Apache Parquet file locally, including its row count, top-level columns and a 100-row preview, without uploading the dataset.
Open tool →Private Parquet to CSV Converter
Convert a bounded Apache Parquet table to a downloadable UTF-8 CSV file locally, with explicit row, column and output-size safety limits.
Open tool →No matching tools on this page.