Guider

How to Convert Between JSON, YAML and CSV

Learn how to convert data between JSON, YAML, and CSV formats, and understand when each format is the best choice for your project.

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How to Test Regular Expressions

Learn how to write and test regular expressions with real-time match highlighting, and explore common patterns for emails, URLs, and phone numbers.

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How to Generate and Verify File Hashes

Learn how to generate hashes for text and files, verify download integrity, and understand when and why to use different hash algorithms.

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How to Read and Write Cron Expressions

Learn how to read, write, and test cron expressions with plain English translations and common scheduling patterns.

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How to Write and Preview Markdown

Learn the basics of Markdown syntax and preview your formatted documents in real time using our free browser-based editor.

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How to Convert Between Color Formats (HEX, RGB, HSL)

Learn how to convert colors between HEX, RGB, HSL, and other formats for use in CSS, design tools, and print projects.

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Build a Complete Administrative Dossier

Scan, merge, number, watermark, compress and protect a complete administrative dossier — all from your browser.

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How to Create a Professional CV as a PDF

Learn how to build a professional CV from scanned or designed pages, merge everything into one PDF, and add page numbers for a polished result.

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How to Convert a PDF to Word (DOCX)

Learn how to turn a PDF into an editable Word document so you can modify text, update content, and reformat freely.

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How to Edit a PDF Online

Learn how to edit PDF files directly in your browser — add text, fill out forms, draw annotations, and tick checkboxes without any software.

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How to Compress an Image Without Losing Quality

Learn how to reduce image file size dramatically while keeping visual quality intact, using the right format and quality settings.

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How to Convert HEIC Photos to JPG

Learn how to convert HEIC images from your iPhone or iPad to universally compatible JPG format, right in your browser.

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Secure Your Passwords in 10 Minutes

Check if your accounts have been breached, analyze your passwords, and generate strong replacements — all in 10 minutes.

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How to View EXIF Data of a Photo

Read the hidden metadata in any photo to discover camera settings, GPS coordinates, date taken, and other technical details.

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How to Remove EXIF Data From a Photo

Strip all hidden metadata from a photo, including GPS location, camera model, and timestamps, before sharing it online.

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Clean Your Files Before Sharing Them

Your photos and PDFs contain hidden metadata. Learn how to check and remove it before sharing by email or online.

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How to Password Protect a PDF

Secure any PDF with a password using AES-256 encryption, right from your browser with no software required.

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How to Add a Watermark to a PDF

Place a custom text watermark on every page of a PDF to mark it as confidential, draft, or branded.

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How to Remove Metadata From a PDF

View and remove hidden metadata from a PDF file, including author name, creation date, and software information.

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How to Check If Your Password Has Been Leaked

Find out whether your password has appeared in a known data breach, using a method that keeps your password private.

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How to Generate a Secure Password

Create a strong, random password with custom length and character options, then copy it for use with a password manager.

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How to Convert Images to a PDF File

Convert one or more images into a neatly organized PDF document, with control over page order and layout.

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How to Create a Custom QR Code

Generate a QR code for any URL or text, customize its appearance, and download it for print or digital use.

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How to Convert WebP Images to JPG or PNG

Quickly convert WebP images to JPG or PNG format right in your browser, with no quality loss and no software to install.

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How to Extract Text From a PDF

Pull all the text content out of a PDF so you can copy, search, edit, or reuse it anywhere.

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How to Sign a PDF for Free

Add a handwritten or typed signature to any PDF document directly in your browser, completely free.

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How to Merge Multiple PDF Files Into One

Combine two or more PDF documents into a single file, reorder them as needed, and download the result.

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How to Delete Pages From a PDF

Remove unwanted pages from a PDF file in a few clicks, without installing any software.

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How to Compress a PDF File

Learn how to shrink a PDF to a smaller file size without losing quality, right from your browser.

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