Free browser-based utilities
Free online PDF tools, image tools and calculators.
Merge, compress, convert and edit PDFs and images, or use everyday calculators. No account and no watermark—each tool page explains what it can do and how it processes your file.
- No signup or watermark
- Processing notes on every tool
- Limits explained before use
Start with a common task
Browse by Category
Explore our collection of free online tools organized by category.
Featured Tools
Polished PDF and AI tools we recommend first — quality over quantity.
Merge PDF
Combine several PDF files into one merged.pdf, in the order you arrange them.
Open ToolSplit PDF
Cut a PDF into page ranges or fixed-size chunks; get a PDF or a ZIP of PDFs.
Open ToolCompress PDF
Shrink a scanned or photo-heavy PDF by up to 90 percent, or strip its metadata while keeping the text selectable.
Open ToolPDF to Word
Pull the text out of a PDF into an editable .docx. No OCR, layout or images.
Open ToolWord to PDF
Turn a .docx into an A4 PDF in your browser. Basic formatting only; the PDF is image-based.
Open ToolPDF to Excel
Extract text from a PDF into an .xlsx, one sheet per page, split into columns by spacing.
Open ToolExcel to PDF
Convert every sheet of an Excel workbook into a plain-table A4 PDF. Formatting and charts are dropped.
Open ToolPDF to JPG
Turn each PDF page into a JPG at 2x scale. Multi-page files download as a ZIP.
Open ToolNeed a file under a size limit?
Application forms often set a maximum size. These tools find the best quality that fits it and say plainly when it cannot be done.
Photos and images
Shrinks a picture to the size you pick, keeping as much of it as the limit allows.
PDF documents
Tries a lossless rewrite first, then redraws pages at the best resolution that fits.
More Tools to Explore
A selection of PDF and image tools for common file tasks.
Merge PDF
Combine several PDF files into one merged.pdf, in the order you arrange them.
Split PDF
Cut a PDF into page ranges or fixed-size chunks; get a PDF or a ZIP of PDFs.
Compress PDF
Shrink a scanned or photo-heavy PDF by up to 90 percent, or strip its metadata while keeping the text selectable.
Word to PDF
Turn a .docx into an A4 PDF in your browser. Basic formatting only; the PDF is image-based.
Excel to PDF
Convert every sheet of an Excel workbook into a plain-table A4 PDF. Formatting and charts are dropped.
PDF to Excel
Extract text from a PDF into an .xlsx, one sheet per page, split into columns by spacing.
Recently Added
Check out our latest tools and utilities.
Percentage Calculator
Find percentages, percentage change and percent-of values.
Discount Calculator
Work out a sale price and savings from a percentage discount.
Days Between Dates Calculator
Find calendar days and weeks between two selected dates.
Compress PDF to a Set Size
Fit a PDF under any size limit from 20 KB to 20 MB, and see plainly when it cannot.
Compress PDF to 100KB
Fit a PDF under 100 KB: one page at a comfortable resolution, two at the floor.
Compress PDF to 200KB
Fit a PDF under 200 KB: a page or two at good quality, five at the floor.
Why Choose Synthixx Tools
Built for speed, privacy, and simplicity.
Runs in your browser
Most tools process files on your own device, so there is no upload wait and nothing is sent to a server.
Private by design
Most file tools process files in your browser tab. Each tool page states its processing method and any exception before you use it.
Free, no watermark
Every tool is free to use and does not stamp a watermark on the result.
No account needed
Open a tool, choose a file and download the result without signing in.
Honest limits
Each tool page says what the tool does and what it does not do, based on how it is actually built.
Works on any device
Use it in a modern desktop or mobile browser. Very large files depend on your device's memory.
Frequently Asked Questions
Everything you need to know about Synthixx Tools.
Are Synthixx tools free?
Yes. Every tool on the site is free to use and does not add a watermark to the file it produces.
Do I need an account to merge or compress a PDF?
No. The PDF and image tools work without signing in.
Are my files uploaded to a server?
Most PDF and image tools process the file in your browser, so it stays on your device. Check the privacy and processing note on the tool page before using a tool with sensitive material.
What can these tools not do?
Because everything runs in the browser with open-source libraries, some jobs are out of reach: there is no PDF password encryption or digital-signature tooling, PDF to Word and PDF to Excel extract text and simple structure rather than reproducing the exact layout, and Word, Excel and PowerPoint to PDF are approximations. Each tool page lists its limits.
Can I use Synthixx Tools on mobile?
Yes, in modern mobile and desktop browsers. Large files can be slow on phones because the work happens on your device.