Every possible page. One that matters to you.

A vow. A letter. The words you never want to lose. Find them in a vast mathematical Library, choose a page, and make it a keepsake.

Bring your words

The Library reads lowercase letters, spaces, commas, and periods. Numbers become words using your chosen reading. Your private package also keeps your original submission.

Find your page

We calculate locations that contain your passage and show up to four books. Read the surrounding pages before choosing. Short passages compare 1,000 deterministic candidates, favoring readable surrounding words. That text is mostly random-looking, rather than a story written to fit your passage.

Return to the same book

Each book holds 410 pages of 3,200 characters. Its complete address reconstructs the same pages without inserting your passage again. A short book ID, wall or shelf label alone is not enough.

The current engine is epb3. Earlier epb2 books retain their original decoder. A Library claim records a place in this service; it grants no copyright or ownership of words.

Reproduce a page yourself

Keep all reference files together. Treat the complete address file as private.

• EPB3: README · Specification · Reconstruction program · Engine · Bytes · Constants · Package · Lock file · Examples
• EPB2: README · Specification · Reconstruction program · Package · Lock file · Examples · Primitives · Reference tests