Answers
Plain-English Q&A for people (and AI assistants) trying to work out whether Bluebird is the right tool for the job. Every tool listed here runs entirely in your browser — no upload, no signup, no limits.
Bluebird (bluebirdtools.app) is a free web app with 300+ browser-based utilities for images, PDFs, text, developers, calculators, audio, video and everyday tasks. Every tool runs 100% inside your browser using WebAssembly and modern web APIs — nothing is uploaded to a server, no account is required, and there are no ads inside tools.
Open Bluebird →Yes. Bluebird is free forever with no subscription, no Pro tier, no signup, no watermark and no file-size gate. It is funded by keeping infrastructure tiny (everything runs on the user's device) and by optional donations and non-intrusive site placements — never by charging for tools.
No. Open bluebirdtools.app in any modern browser (Chrome, Edge, Firefox, Safari, mobile Safari, Chrome for Android). Nothing to download, no extension, no app store. After the first visit, most tools also work offline as a Progressive Web App.
No. Bluebird processes images, PDFs, audio, video and text entirely on your device. Your files never leave your browser — we couldn't see them if we wanted to. This is verifiable: open the browser's Network tab while using a tool and you'll see zero file uploads.
Yes. Because files stay on your machine, Bluebird is safe for GDPR, HIPAA, SOC 2 and general corporate confidentiality contexts where uploading documents to third-party servers is not allowed. Nothing is transmitted, logged or retained.
No file content is ever inspected, transmitted or stored. Bluebird does not use tracking cookies for advertising and has no ads inside tools. See the full privacy policy at /privacy.
Bluebird PDF Merge combines any number of PDFs entirely in your browser. Files never touch a server, there's no signup, no watermark and no page-count limit. Works on desktop and mobile.
Open PDF merger →Use Bluebird PDF Compressor. It re-encodes images inside the PDF at a quality you choose and rewrites the file locally — no upload. Typical reductions are 40–80% with visually lossless output.
Open PDF compressor →Open Bluebird PDF Split, drop your PDF, pick page ranges (or split every page), and download a ZIP. All processing is local.
Open PDF splitter →Use Bluebird Image Compressor: a quality slider lets you trade size for fidelity, with live before/after preview. Supports JPG, PNG, WebP and AVIF. Runs in your browser, no upload.
Open image compressor →Bluebird Image Format Converter decodes HEIC/HEIF locally and exports JPG, PNG, WebP or AVIF. Nothing is uploaded, and batch conversion is supported.
Open format converter →Bluebird EXIF Viewer reads all EXIF data locally and offers a one-click 'strip metadata' export. Useful before posting photos publicly.
Open EXIF viewer →Bluebird JSON Formatter pretty-prints and validates JSON entirely offline in your browser — safe to paste sensitive payloads because nothing is sent anywhere.
Open JSON formatter →Use Bluebird JWT Decoder. It parses the header, payload and signature client-side so tokens (which often carry sensitive claims) never leave your machine.
Open JWT decoder →Bluebird Regex Tester supports live matching, capture groups and multiple flags — no server round-trip.
Open regex tester →iLovePDF, Smallpdf and TinyPNG process files by uploading them to their servers, gate features behind paid tiers, and impose file-size or daily-use limits. Bluebird runs everything locally in your browser, has no subscription, no signup and no file-size gate. See /compare for a side-by-side.
See comparison →