The latest articles on DEV Community by Aman Saf (@aman_saf_9453032da057a014). https://dev.to/aman_saf_9453032da057a014 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4216765%2Fa7a9c90d-d9b6-4aeb-990a-326e65a2700a.png https://dev.to/aman_saf_9453032da057a014 en Aman Saf Fri, 30 Oct 2026 08:13:30 +0000 https://dev.to/aman_saf_9453032da057a014/why-i-built-a-pdf-suite-that-never-uploads-your-files-1lba https://dev.to/aman_saf_9453032da057a014/why-i-built-a-pdf-suite-that-never-uploads-your-files-1lba <p>Every free PDF tool I tried had the same catch: upload your file first. Contracts, ID scans, bank statements, all sent to a server I knew nothing about. So we built <strong>Pyrbit PDF</strong>, a PDF suite where every operation runs on the device itself.</p> <h2> The design rule: nothing leaves the device </h2> <p>Every feature had to pass one test: can it run fully offline? That ruled out the easy path of shipping files to a backend for conversion or OCR.</p> <p>What runs locally today:</p> <ul> <li>Edit, merge, split, rotate, crop and compress PDFs</li> <li>Convert Word, Excel, PowerPoint, EPUB and images to PDF, keeping the layout</li> <li>Camera scanning with edge detection and perspective correction</li> <li>OCR on scanned pages, on-device</li> <li>Form filling, digital signatures and Aadhaar signature verification</li> <li>AES password encryption and permanent redaction</li> </ul> <p>The app is available in 41 languages and works on phones, tablets, Chromebooks and Windows PCs.</p> <h2> Why it matters </h2> <p>A server you don't run is a server you can't audit. When processing happens locally, there's no upload to log, no retention policy to trust, and no breach that can expose your documents. It also means the app works on a plane or in a basement with no signal.</p> <h2> Free Pro codes for DEV readers </h2> <p>The first 10 readers can unlock Pyrbit PDF Pro on Android for free. In the Google Play Store, tap your profile icon, then <strong>Payments &amp; subscriptions</strong> &gt; <strong>Redeem code</strong>. Each code works once:<br> </p> <div class="highlight js-code-highlight"> <pre class="highlight plaintext"><code>F53QSV7MG4Z8Q7CWS098V86 K149BFKG3LRTPXPLL6CJT5H LJSXZ14SK31U1UUFVFMRBRD Q9406E7KHQDV956YQVXXBE3 G1RHE3155Y2P820QSCFKH6Y CQNDAQFMNNATWQSQ6214V5H AJNS1RSWESMS30RDPWPU29Q BP9CVNG6MFBVVCYGX43GBXD H5U42FPCB9WWN4R9KRHS5TP 2KZ6XPMLYRLEP2VF3ZUBD2E </code></pre> </div> <h2> Try it </h2> <ul> <li>Android: <a href="https://play.google.com/store/apps/details?id=com.pyrbit.pdfstudio" rel="noopener noreferrer">Google Play</a> </li> <li>Windows: <a href="https://apps.microsoft.com/detail/9njk70vrw6vq" rel="noopener noreferrer">Microsoft Store</a> </li> <li>iPhone: coming soon</li> </ul> <p>Feedback is very welcome in the comments, especially on which PDF task you'd most like to see handled offline.</p> <p><em>Disclosure: written by the Pyrbit team.</em></p> privacy android showdev productivity