Blog
Practical guides on getting things done with your files — PDFs, images, tokens, data — without ever uploading them to someone else's server.
How to merge PDF files without uploading them
Combine PDFs entirely in your browser — no upload, no server, no sign-up. Here's why local merging is safer for contracts and IDs, and how to do it in three steps.
· 4 min read
How to compress a PDF without losing quality
Shrink a PDF for email or upload limits while keeping text sharp and selectable — all in your browser, with nothing sent to a server. A practical, private guide.
· 5 min read
What is a JWT, and how do you decode one safely?
A plain-English guide to JSON Web Tokens: what the three parts mean, how signature verification works, and why you should never paste a token into a random website.
· 6 min read
How to convert HEIC to JPG on any device
iPhone photos are HEIC, and half the web can't open them. Here's how HEIC works, when to convert to JPG, and how to do it in your browser without uploading a single photo.
· 5 min read
How to sign a PDF electronically for free
Draw or place your signature on a PDF and download it — no account, no watermark, and no uploading the document to a signing service. Here's how, and whether it's legally valid.
· 5 min read
How to password-protect a PDF
Add a password so only the right people can open a PDF — encrypted on your own device, never uploaded. What real PDF encryption does, its limits, and how to do it in three steps.
· 5 min read
How to extract text from a scanned PDF with OCR
A scanned PDF is just pictures of text — you can't select or search it. Here's how OCR turns those scans back into real, copyable text, entirely in your browser.
· 6 min read
What is Base64 encoding, and when should you use it?
Base64 turns binary data into plain text so it survives systems built for text. Learn what it is, why it makes data ~33% bigger, when to use it, and why it is not encryption.
· 5 min read
A private, offline alternative to online PDF tools
Online PDF tools like iLovePDF and Smallpdf are cloud services — you upload your files to their servers. Here's a private alternative that runs entirely in your browser, so nothing is uploaded.
· 6 min read
How to split a PDF into separate files
Extract a page, pull out a range, or break a big PDF into individual files — entirely in your browser, with nothing uploaded to a server. A quick, private, step-by-step guide.
· 4 min read
How to generate a strong password
What actually makes a password hard to crack, why length matters more than special characters, and how to generate one securely in your browser — never sent over the network.
· 5 min read