Fast, private utilities for media, PDFs, and files running 100% on your local machine. Zero subscriptions, zero cloud uploads, zero logins.
Native FFmpeg Demuxing (-map 0:a -c:a mp3)
16 native utilities built and tested for daily creator and power-user workflows.
Extract high-bitrate MP3, WAV, AAC, or FLAC audio tracks from any video container without re-encoding video frames.
Download clean MP4 and WebM videos from supported web links directly to disk with zero watermarks or spam ads.
Fetch exact max-resolution (1080p/4K) original thumbnails from any video URL in one click for design reference.
Extract clean time-coded SRT subtitles and plain text transcripts from online videos for note-taking and summaries.
Batch extract cover pages from hundreds of documents or route them directly to default Windows printers.
Combine multiple PDF documents into a single clean file or split massive multi-chapter books by custom page ranges.
Reorder pages, rotate upside-down scans by 90°/180°, and delete unwanted blank pages from scanned receipts.
Protect sensitive contracts with AES-256 password encryption or strip protection from documents you own.
Convert plain text files, logs, and images directly into standardized, searchable PDF documents on local drive.
Shrink image file footprints by 60%–85% with zero perceptible quality drop using multi-thread entropy reduction.
Specify exact file sizes (e.g. max 50 KB for government forms) and let binary search calculate exact compression.
Batch transform image collections across PNG, WebP, JPG, BMP, TIFF, and ICO while preserving alpha channels.
Extract dominant 5-color aesthetic palettes with hex codes and CSS tokens directly from any photo or artwork.
Rename thousands of files in milliseconds with sequential numbering, prefix/suffix additions, and regex matching.
Analyze header magic bytes to detect disguised or corrupt file extensions and fix them automatically.
Generate full directory folder trees from indented text or export entire disk folder structures to clean ASCII.
Web tools charge subscriptions for simple C algorithms and upload your files to remote servers. Boltools fixes that.
Every audio file, document, video clip, and photo is processed directly on your local CPU and GPU. Your files never leave your computer.
No monthly recurring payments, no credit card prompts, and no account registrations. Free forever for creators and developers.
Packaged as a 4 MB standalone executable. No heavy Electron dependencies, no background telemetry, and takes under 40 MB of RAM.
Download Boltools for Windows. Portable executable, zero installer bloat, runs instantly.