docvexa.fun is a small workshop of 39 focused utilities for the everyday paperwork problems: merging a bundle, pulling out three pages, numbering a printout, counting words, cleaning up text copied from a PDF. Each tool runs in your browser using ordinary JavaScript, so your files are never uploaded and nothing is stored after you close the tab.
Join several PDF files into one document, in the order you choose.
Pull one page range out of a PDF and save it as a new file.
Delete unwanted pages, such as blank scans or internal notes.
Keep only the pages you list and discard the rest.
Turn sideways or upside-down pages the right way up.
Rebuild a document following a page order you write out.
Flip a document so the last page becomes the first.
Stamp sequential numbers onto the footer of every page.
Overlay diagonal text such as DRAFT or CONFIDENTIAL.
Rewrite the title, author, subject and keyword fields.
Add empty pages after a chosen page, ready for duplex printing.
Repeat a single page several times, for labels or forms.
Fit every page onto a uniform A4 or Letter sheet.
Render PDF pages as PNG images you can drop into slides.
Copy the text layer out of a PDF into plain, editable text.
Turn the first page of a PDF into a small cover image.
Break a document into separate single-page PDF files.
Turn Markdown notes into clean HTML you can paste anywhere.
See page count, page sizes, metadata and file weight at a glance.
Live counts for words, characters, sentences and paragraphs.
Estimate how long an article or script takes to read aloud.
List the most frequent words and phrases in a draft.
Compare two drafts line by line and highlight what changed.
Switch text between sentence, title, upper, lower and slug case.
Rejoin text broken across lines by a PDF or an email client.
Strip repeated lines from lists, exports and address dumps.
Swap every occurrence of a word or phrase across long text.
Collapse double spaces, tabs and trailing blanks.
Sort lists alphabetically, by number, by length or at random.
Turn a headline into a tidy, lower-case web address segment.
Convert a small file into a Base64 data string or data URL.
Shrink JPEG and PNG photos before adding them to a document.
Convert between bytes, KB, MB and GB, binary or decimal.
Work out how large an image prints at a given resolution.
Look up A and US paper sizes in mm, inches, points and pixels.
Combine JPEG and PNG photos into a single paged PDF.
Type or paste text and download it as a formatted PDF.
Turn a list of lines into a printable tick-box checklist.
Add a titled cover sheet to the front of an existing PDF.
Rearrange, trim and reshape PDF documents. Pages are processed inside your browser tab, so the original file never leaves your device.
Move content between PDF, image and plain-text formats without installing desktop software or signing up for an account.
Inspect what a document actually contains: page counts, metadata, word totals, keyword balance and differences between drafts.
Tidy up copied text before it goes into a report, a PDF or a content management system. Every change happens instantly as you type.
Practical helpers for the boring parts of document work: encoding, shrinking images, unit maths and print sizing.
Create fresh PDF files from the material you already have, whether that is a folder of photos or a block of typed notes.
PDF and image tools use the browser's own file reader and canvas, plus two well known open-source libraries served from this site itself. Your document is read into memory in the tab, changed there, and handed back to you as a download.
There is nothing to register for and no daily limit, because there is no server doing the work. The only practical limit is the memory your own device can spare for very large files.
Every tool page explains what the tool does, who it is for and how to use it, in plain language. If something is unclear or behaves oddly, the contact form goes straight to a person.