Step-by-step tutorials to help you get the most out of FileNaut's free tools. From PDF editing to image conversion — learn how to do it all in your browser.
The FCC benchmark is 100/20 Mbps, but the number you need depends on how many people share the line and what they do at once. Here is how to work it out.
Mbps is megabits per second; file sizes are in megabytes. Divide by eight to convert, and most confusion about internet speed disappears.
Speed is how much data moves; latency is how long it takes to start. Jitter is why your calls break up while your speed test looks perfectly fine.
You have two IP addresses, not one. Here is how to find each of them on every major platform, and which one the person asking actually wants.
Learn how to create professional invoices with our free browser-based generator. No signup, no watermark, no upload — everything stays on your device.
A truly free invoice generator with no signup, no watermark, and no upload. Build a professional PDF invoice in your browser and download it instantly.
Create a professional receipt in minutes — what to include, how to set up tax and fees, 80mm vs A4 sizing, and how to download it as a PDF. Free and private.
Draw your signature in the browser and download it as a PNG in about thirty seconds — then add it to a PDF, contract, or email. Plus the part most guides skip: what actually makes an electronic signature legally binding.
A complete guide to editing PDFs without expensive software. Add text, draw, highlight, insert images, and sign documents — all in your browser.
Convert any image to PDF or combine multiple images into a single PDF document. No upload, no signup — everything stays on your device.
Convert PDF documents to editable .docx Word files without uploading to any server. Free, fast, and private — all processing happens in your browser.
Combine multiple PDF files into one in seconds. Drag to reorder pages, remove unwanted files, and download your merged PDF — all in your browser with no upload required.
OCR (Optical Character Recognition) is the technology that converts scanned documents, images, and PDFs into editable, searchable text. Here's how it works and how to use it for free.
Sign any PDF document in seconds — draw your signature, type it, or upload a saved image. Free, browser-based, and completely private. No files are uploaded to any server.
Every method explained: browser-based converter, Microsoft Word, Google Docs, LibreOffice, and Print to PDF. Pick the fastest approach for your situation.
Shrink large PDF files for email, upload, or sharing. Free browser-based compressor — no upload, no signup, no quality loss for text. Plus methods for Mac, Windows, and Acrobat.
A practical, head-to-head comparison of the top free PDF editors. Which actually work without signups, watermarks, or uploading your private files. Plus FileNaut's in-browser editor as the privacy winner.
Rotate one page or every page of a PDF and save the change so it sticks. Free browser-based tool — no upload, no signup. Works on Mac, Windows, Chrome, and mobile.
Turn photos, documents, or whole webpages into a PDF on your iPhone. Free browser tool plus the built-in iOS methods that actually save permanently.
Turn any PDF page into a high-quality JPG or PNG image in seconds. No upload to any server — all conversion happens privately in your browser.
Edit PDFs directly in your browser. Add text, sign documents, highlight, fill forms, and more — no software install, no uploads, no signup.
Honest comparison of FileNaut vs Smallpdf. Where Smallpdf still wins, where its paywall, daily cap, and forced signup push users to look elsewhere — and how FileNaut's 68+ free tools fill the gap.
A balanced look at ILovePDF — features, free tier limits, pricing, and privacy. Plus how FileNaut compares as a no-account, no-nag, browser-based alternative.
A balanced look at Sejda — what it does well, where the free tier limits bite, and how FileNaut compares as a no-cap, no-upload, browser-based alternative.
A balanced look at PDF24 — the German free-PDF veteran with ~30 tools and a Windows desktop app. Genuinely free, ad-supported, server-side. Plus how FileNaut compares as a no-ad, no-upload, cross-platform alternative.
A respectful, head-to-head comparison of Adobe Acrobat online vs FileNaut. Where Adobe still owns the category, where the signin wall and Pro paywall push users to look elsewhere, and how FileNaut covers most everyday PDF work for free in the browser.
A balanced look at Foxit Reader, Foxit PDF Editor, and Foxit Online — what each one costs, what they do well, and where FileNaut's no-install, no-subscription model is the better fit.
Split a long PDF into separate files, pull out just the pages you need, or break a document into chapters. Free browser-based tool — no upload, no signup. Plus native Mac, Windows, and Acrobat methods for when you are offline.
Watermarks aren't all created equal — and not all of them come off cleanly. Here's an honest, step-by-step guide to removing text and image watermarks from a PDF for free, right in your browser.
Stamp a “Confidential”, “Draft”, or logo watermark across every page of a PDF in seconds — free, in your browser, with full control over opacity, angle, and position.
Need to type on a PDF that has no fillable fields? Add text to any PDF in seconds — free, in your browser, no Acrobat and no upload. Here is exactly how.
Your email bounced because the PDF is too big? Here is exactly how to shrink it under the Gmail, Outlook, and corporate attachment limits — free, in your browser, no upload.
Turn HTML markup into a PDF in your browser — free, private, no upload. Here is the fastest way, when to use Print-to-PDF instead, and the code methods developers reach for.
The fastest free way to turn a Markdown file into a clean, shareable PDF — with real selectable text, working tables and code blocks, and nothing uploaded to a server. Plus when to use Pandoc or VS Code instead.
Lock a PDF with a password in about 30 seconds — real AES-256 encryption, done entirely in your browser. No account, no upload, no watermark.
PDFs have two completely different kinds of password, and only one of them needs you to know it. Learn which lock you are looking at, remove it in about ten seconds, and understand why no honest tool can recover a password you have forgotten.
Cropping a PDF takes about thirty seconds on any device. What almost nobody knows is that it does not delete the cropped-away content or shrink the file — we cropped a page to 18% of its size and the file got 0.0% smaller. Here is how to crop, and what to do when you actually need the margins gone.
A PDF does not record what a heading is, so every converter is guessing from font sizes and coordinates. We measured exactly where that guessing fails: tables collapse, columns interleave, and any line spacing of 12 points or less merges your lines into one run. Here is how to convert, and the four-pass clean-up that rebuilds the structure fast.
Getting text out of a PDF is easy when the PDF has a text layer and impossible when it does not. We ran six test PDFs through every method: here is which one to use for digital files, which for scans, and why two-column pages and tightly spaced lines come out scrambled.
Put a logo, photo or stamp onto a PDF page, or add a picture as a page of its own. Five methods, which one to use, and how to keep the image sharp, in proportion and the file small.
Four free ways to highlight a PDF, the difference between a highlight you can delete later and one that is part of the page, and how to remove highlights you no longer want.
Learn how to format, validate, and debug JSON data. Use our free browser-based JSON formatter — no data leaves your device.
A complete guide to Base64 encoding: what it is, how the encoding works, common use cases, and how to encode or decode any string, file, or image for free.
Everything you need to know about hex color codes: structure, reading them, common colors, hex vs RGB vs HSL, CSS usage, and tips for choosing colors.
Convert CSV files to JSON format instantly in your browser. Covers Filenaut's free tool, JavaScript, Python, and CLI methods. No uploads, no sign-up.
A practical, head-to-head look at the top markdown editors you can use online. Live preview, exports, privacy, and which one is fastest for what you're actually trying to do.
Understand the real differences between YAML and JSON: syntax, readability, comments, data types, and the gotchas that bite. Plus when to pick each and how to convert.
Same color, three notations. What RGB, HEX, and HSL actually mean, when each one is the right choice, and how to convert between them instantly.
A 10-digit number like 1678886400 is a Unix timestamp. Here is exactly how to turn it into a real date, convert a date back into a timestamp, and avoid the seconds-vs-milliseconds mistake that trips up almost everyone.
Spot every change between two versions of a document, code file, or block of text — added, removed, and edited — in seconds, right in your browser.
Generate one random UUID or a batch of 100 in a single click. Here is what a UUID actually is, why v4 is the version you almost always want, and how to make them in your own code.
Turn a JSON array into a clean, spreadsheet-ready CSV in one paste. Here is how it works, how to handle nested data, and why your file never leaves your browser.
Paste a JWT and see what's inside: header, payload, and every claim. Learn how decoding works, why it's not the same as verifying, and how to read exp timestamps.
Subnetting is only hard until someone shows you the block-size trick. Here is how to calculate a subnet mask by hand in about ten seconds, a full /8 to /32 CIDR reference chart, and a free browser-based calculator that does it instantly.
Excel guesses what your CSV columns mean, and it guesses wrong: ZIP code 01234 becomes 1234, and a 16-digit order ID becomes 1.23457E+15. Here are three ways to get a CSV into Excel with every value intact.
Four ways to turn an XLSX file into CSV — in your browser, in Excel, in Google Sheets, and from the command line — and exactly which one to pick based on what is actually inside your spreadsheet.
Convert Markdown to HTML in seconds, then fix the three things that always go wrong: vanished line breaks, unstripped front matter, and a fragment that is not a page.
XML to JSON looks like a one-click job, and for simple files it is. But attributes, single-item lists and leading zeros are where conversions quietly lose data. This guide shows the exact mapping rules, converts real files both directions in the browser, and covers the five traps that break the result.
Paste any text and get its SHA-256, SHA-384, SHA-512 and SHA-1 hash instantly. Learn what hashing actually is, which algorithm to pick, and how to verify a download checksum.
A .json file is just text — but double-clicking it rarely helps. Here is how to open, read and search one on any device, including files too big for a text editor.
Regular expressions look like keyboard noise until you learn the eight symbols that do ninety percent of the work. This guide teaches those first, gives you a full cheat sheet, walks through real patterns for emails, dates and log files, and explains the greedy-quantifier trap that catches everyone once.
Cron runs commands on a schedule using five fields. Here is what each one means, the expressions you will actually need, and the OR rule that breaks more cron jobs than any other.
CSV is the simplest way to move a table between programs — and the easiest to silently corrupt. Here is what is really inside the file, and how to open it without Excel eating your data.
Double-clicked a .md file and got a wall of hash marks? That is Markdown, and the symbols are the formatting. Here is what it is, how to open one, and the complete syntax reference.
Spaces, ampersands and accents break URLs. Learn what percent-encoding does, when to encode the whole URL vs just one parameter, and how to fix the traps that silently corrupt links.
An HTML file is just plain text with a .html extension — that is genuinely the whole thing. The reason most first attempts fail is not the code, it is the save dialog: Notepad quietly appends .txt and TextEdit saves rich text that a browser shows as gibberish. Here are four ways to create one, the boilerplate to copy, and how to open it once you have it.
Stacking CSV files looks trivial until a header is spelled differently, a ZIP code loses its zero or two rows get glued together. We ran twelve test files through every method: here is which one to use, and the traps that none of them warn you about.
Four free ways to convert between JSON and YAML in either direction, a tested table of the values each tool quietly changes, and fixes for Kubernetes, Docker Compose, OpenAPI and CloudFormation files.
Understand the differences between JPG and PNG: quality, file size, transparency, and use cases. Plus how to convert between them.
The fastest free way to convert PNG to JPG without uploading your file. Plus built-in methods for Mac Preview, Windows Photos, iPhone, and Android — and the quality settings that actually matter.
Turn a JPG into a PNG in seconds — free, no upload, no signup. Plus the one thing most people get wrong about transparency, and when converting is actually worth it.
Your iPhone shoots HEIC, but half the web can't open it. Here's the fastest free way to convert HEIC to JPG without uploading your photos — plus built-in Mac, Windows, and iPhone methods, and how to make your phone stop creating HEIC files entirely.
Change an image to exact pixel dimensions or scale it by percentage — without stretching it, wrecking the quality, or uploading it anywhere. Includes target-size cheat sheets for social media, web, and email.
Most "PNG to SVG" converters do one of two very different things — and picking the wrong one is why your logo still looks blurry or your cutting machine refuses the file. Here is how each method works, which one you need, and how to do both for free.
Most SVG to PNG converters silently output a tiny 300x150 image. Learn why it happens, the one-line fix, and how to export crisp PNGs at any size.
You do not need twenty icon files. Learn the five that modern browsers actually use, the exact HTML to paste, how to check you got a real .ico, and how to fix a favicon that refuses to appear.
You saved an image and got a .webp your software refuses to open. Here is what WebP actually is, why the web switched to it, and the fastest way to turn one back into a JPG or PNG.
An SVG file is a vector image written as text instructions rather than a grid of pixels, which is why it stays perfectly sharp at any size. Here is what is inside one, how to open it, and when SVG beats PNG or JPG.
Turn a screenshot, photo or scan into text you can copy and edit. We ran nine test images through a browser OCR tool and Apple's built-in engine: here is the fastest method on each device, and the mistakes that slip through when you do not check.
WebP can cut an image to a fraction of its size, but converting does not guarantee a smaller file. We measured five real images at every setting: here is how to convert, which quality to pick, and when to keep the original.
Paste your text and get an instant word count, character count, sentence count, paragraph count, and reading time. Free, private, works in any browser.
Downloaded an .epub and nothing opens it? Here's how to view EPUB files on every device — including a free in-browser viewer that needs no install.
A no-nonsense comparison of the best EPUB viewers — desktop, mobile, and browser — so you can pick the right one in two minutes.
Every good EPUB reader compared — free apps, desktop, mobile, and a no-install browser option. Honest pros and cons for each.
Love Calibre's power but hate its clutter just to read a book? Here are the best lightweight Calibre alternatives for opening EPUB files.
Adobe Digital Editions is dated and fiddly. Here are cleaner alternatives for opening EPUB files — including one that runs in your browser.
Tired of Neat Reader's paywall and account prompts? Here are the best free Neat Reader alternatives for reading EPUB files.
Three free ways to turn Markdown into a properly formatted Word document, what survives the conversion and what does not, how to convert AI chat answers, and how to go back from Word to Markdown.
Three free ways to turn a Word document into Markdown, a tested comparison of what survives (headings, tables, footnotes, images, code), and fixes for the problems you will actually hit.
A practical Convertio review and head-to-head comparison with FileNaut. Where Convertio still wins, where it falls down, and which free converter is actually better for the file types people convert every day.
A balanced look at CloudConvert — what their API does well, where the free tier bites for end users, and how FileNaut compares as a no-account, no-minute-cap, browser-based converter.
Three formulas cover almost every percentage question you will ever face. Here is how to calculate them by hand, the mental-math shortcuts, and a free tool that does it instantly.
Your exact age is simple once you know the borrow-down method. Here is how to calculate age in years, months and days by hand, how to find your age on any future date, and a free calculator that does it instantly.
The formula takes one line. The rest is what trips people up — bump-outs and closets, sloped ceilings, whether the basement counts, how much extra flooring to buy, and getting the answer out in square meters or acres.
Generate a QR code for a website, plain text, or WiFi network in your browser — free, private, no signup. Plus what to check before you print it.
The full Morse code alphabet — every letter, number, and punctuation mark — plus how to read it, write it, memorize it fast, and translate text instantly in your browser.
Most password advice is outdated. Here's what actually makes a password hard to crack — and a free, private generator that builds one in your browser in one click.
Generate a scannable barcode in your browser in under a minute — plus how to pick the right format, why some barcodes won't scan, and when you actually need to register with GS1.
Lorem ipsum is the placeholder text used in almost every design mockup on earth. Here is what it actually means, where it comes from, and how to generate as much of it as you need.
The answer is 1,024 - or 1,000, depending on who is counting. Here is why both are correct, the full byte-to-terabyte ladder, and the reason your 1 TB drive shows up as 931 GB.
Zipping takes two clicks on every platform. The part nobody tells you is that zip shrinks a spreadsheet by 72% and a photo by 0.1% — here is the data, and what to do when zipping does not help.
To turn Celsius into Fahrenheit, multiply by 1.8 and add 32. To go back, subtract 32 and divide by 1.8. Here are both formulas worked through, a chart of everyday temperatures, oven conversions, and which head-math shortcuts are close enough.