How-To Guides — Free Tool Tutorials
Step-by-step tutorials that show you exactly how to use every LevnTools tool. Whether you need to merge PDFs, compress images, generate QR codes, or run SEO audits, these guides walk you through each feature in plain language. Every tool runs directly in your browser — no uploads, no accounts, no installs. Pick a guide below and get started in seconds.
PDF Tools
12How to Merge PDF Files Online for Free
Learn how to combine multiple PDF files into a single document using our free online Merge PDF tool. No software installation required.
Read guideHow to Split a PDF into Individual Pages
Split a multi-page PDF into separate single-page files or extract specific page ranges with our free online Split PDF tool.
Read guideHow to Compress PDF Without Losing Quality
Reduce your PDF file size while preserving text sharpness and image clarity using our free online PDF compression tool.
Read guideHow to Convert Images to PDF
Convert JPG, PNG, or other image files into a single PDF document using our free online image-to-PDF converter.
Read guideHow to Remove Pages from a PDF
Delete unwanted pages from a PDF document quickly and easily with our free online tool. No account or software needed.
Read guideHow to Reorder PDF Pages
Rearrange the pages of any PDF document by dragging and dropping page thumbnails with our free online tool.
Read guideHow to Rotate PDF Pages
Rotate individual pages or all pages in a PDF by 90, 180, or 270 degrees with our free online rotation tool.
Read guideHow to Add a Watermark to a PDF
Add text or image watermarks to your PDF documents for branding or confidentiality with our free online tool.
Read guideHow to Extract Text from a PDF
Copy all selectable text from a PDF document into plain text format with our free online extraction tool.
Read guideHow to Reduce PDF File Size for Email
Shrink your PDF files to fit email attachment size limits using our free online compressor. Fast, private, and effective.
Read guideHow to Combine Scanned Documents into One PDF
Merge multiple scanned document PDFs into a single organized file using our free online Merge PDF tool.
Read guideHow to Create a PDF from Photos
Turn a collection of photos into a polished PDF document. Perfect for photo albums, portfolios, and presentations.
Read guideImage Tools
12How to Resize Images for Social Media
Quickly resize images to the perfect dimensions for Instagram, Facebook, Twitter, and other social platforms with our free tool.
Read guideHow to Convert PNG to JPG Online
Convert PNG images to JPG format instantly in your browser. Reduce file size while maintaining image quality.
Read guideHow to Compress Images for Web Without Quality Loss
Optimize your images for faster website loading by reducing file size without visible quality loss using our free compressor.
Read guideHow to Remove Image Background for Free
Automatically remove the background from any photo using AI-powered detection. Perfect for product images and profile pictures.
Read guideHow to Crop an Image to a Specific Size
Crop any image to exact pixel dimensions or aspect ratios using our free online cropping tool.
Read guideHow to Add a Watermark to Photos
Protect your photos with a text or logo watermark. Batch watermark multiple images at once with our free online tool.
Read guideHow to Convert HEIC to JPG
Convert Apple HEIC/HEIF photos to widely compatible JPG format instantly in your browser. Free and private.
Read guideHow to Make an Image Smaller in File Size
Reduce image file size for faster uploads, email attachments, and web use without noticeable quality loss.
Read guideHow to Flip an Image Horizontally
Mirror your image horizontally or vertically with a single click using our free online image flip tool.
Read guideHow to View EXIF Data of a Photo
Inspect the hidden metadata in any photo including camera settings, GPS location, date taken, and more.
Read guideHow to Convert WebP to PNG
Convert WebP images to widely compatible PNG format with full quality and transparency preservation.
Read guideHow to Adjust Image Brightness and Contrast
Fine-tune the brightness, contrast, saturation, and other settings of any image with our free online adjustment tool.
Read guideSEO Tools
6How to Generate Meta Tags for Your Website
Create optimized meta tags including title, description, and Open Graph tags to improve your search engine visibility.
Read guideHow to Create an XML Sitemap
Generate an XML sitemap for your website to help search engines discover and index all your pages efficiently.
Read guideHow to Create a Robots.txt File
Generate a properly formatted robots.txt file to control how search engine crawlers access your website.
Read guideHow to Check Keyword Density in Your Content
Analyze keyword frequency and density in your text to optimize for SEO without over-stuffing.
Read guideHow to Add Open Graph Tags to Your Website
Add Open Graph meta tags so your website looks great when shared on Facebook, LinkedIn, Twitter, and other social platforms.
Read guideHow to Write an Optimized Meta Description
Craft compelling meta descriptions that improve click-through rates from search engine results pages.
Read guideQR Code
10How to Create a QR Code for a URL
Generate a scannable QR code that links to any website URL. Free, instant, and no sign-up required.
Read guideHow to Create a QR Code for WiFi
Generate a QR code that guests can scan to instantly connect to your WiFi network. No need to type passwords.
Read guideHow to Make a QR Code with a Logo
Create branded QR codes with your company logo embedded in the center. Perfect for marketing materials.
Read guideHow to Scan a QR Code from an Image
Decode any QR code from a screenshot or image file. Extract the URL, text, or data embedded in the QR code.
Read guideHow to Create a vCard QR Code for Business Cards
Generate a QR code that instantly saves your contact details to anyone phone. Perfect for business cards and networking.
Read guideHow to Generate QR Codes in Bulk
Create hundreds of unique QR codes at once for product labels, event tickets, inventory tags, and more.
Read guideHow to Create a QR Code for a Restaurant Menu
Generate a QR code that links to your digital restaurant menu. Guests scan and view the menu on their phones.
Read guideHow to Make a QR Code for a Google Form
Generate a QR code that opens your Google Form directly when scanned. Great for surveys, RSVPs, and feedback.
Read guideHow to Create a Custom Colored QR Code
Design QR codes with custom foreground and background colors to match your brand identity or marketing materials.
Read guideHow to Create a QR Code for Payment Links
Generate a QR code linked to your payment page so customers can pay by scanning. Works with any payment URL.
Read guideColor Tools
8How to Pick Colors from an Image
Extract exact color values (HEX, RGB, HSL) from any image using our free online color picker tool.
Read guideHow to Convert HEX to RGB Color
Instantly convert HEX color codes to RGB values and vice versa with our free color converter tool.
Read guideHow to Generate a Color Palette for Your Brand
Create a harmonious color palette for your brand or project using color theory rules and our palette generator.
Read guideHow to Check Color Contrast for WCAG Compliance
Test foreground and background color combinations for WCAG 2.1 accessibility compliance. Ensure your text is readable.
Read guideHow to Create a CSS Gradient
Design beautiful linear and radial CSS gradients visually and copy the generated code for your website.
Read guideHow to Test Colors for Colorblindness
Simulate how your design looks to people with different types of color vision deficiency using our free tool.
Read guideHow to Find Complementary Colors
Discover complementary, analogous, and other harmonious color combinations using the color wheel and our picker tool.
Read guideHow to Export a Color Palette as CSS Variables
Generate and export a color palette as CSS custom properties ready to paste into your stylesheet.
Read guideAI Tools
10How to Rewrite Text with AI
Rephrase any text in seconds using AI. Change the tone, simplify complex writing, or create unique variations.
Read guideHow to Generate Lorem Ipsum Placeholder Text
Generate Lorem Ipsum or custom placeholder text for mockups, designs, and development projects.
Read guideHow to Write a Professional Email with AI
Compose polished professional emails in seconds using AI. Great for follow-ups, introductions, and business communication.
Read guideHow to Generate Blog Title Ideas with AI
Get dozens of engaging blog post title suggestions for any topic using AI. Beat writer block instantly.
Read guideHow to Generate Hashtags for Instagram
Get relevant, high-performing hashtags for your Instagram posts using our AI-powered hashtag generator.
Read guideHow to Check Grammar Online for Free
Fix grammar, spelling, and punctuation errors in your text instantly using our free AI-powered grammar checker.
Read guideHow to Summarize a Long Text with AI
Condense long articles, documents, or reports into concise summaries using AI. Save time on reading and research.
Read guideHow to Generate Paragraphs with AI
Create well-structured paragraphs on any topic using AI. Perfect for content creation, brainstorming, and drafting.
Read guideHow to Rewrite an Essay in a Different Tone
Transform the tone of your essay from formal to casual, academic to conversational, or any style you need using AI.
Read guideHow to Create Hashtags for TikTok
Generate trending and niche TikTok hashtags to boost your video visibility and reach the right audience.
Read guideText Tools
8How to Convert Text to Uppercase
Instantly convert any text to UPPERCASE, lowercase, Title Case, or other case formats with our free tool.
Read guideHow to Count Words in a Text
Count words, characters, sentences, and paragraphs in any text instantly. Perfect for essays, articles, and social media.
Read guideHow to Compare Two Texts Side by Side
Find the differences between two texts with our diff checker. Highlights additions, deletions, and changes.
Read guideHow to Remove Duplicate Lines from Text
Quickly remove duplicate lines from a list or text block. Keep only unique entries and clean up your data.
Read guideHow to Convert Text to camelCase
Convert any text to camelCase, PascalCase, snake_case, or kebab-case for use in programming and file naming.
Read guideHow to Format Text with Line Numbers
Add line numbers to any text for code references, legal documents, and manuscript formatting.
Read guideHow to Analyze Word Frequency in Text
Count how often each word appears in your text. Identify overused words and improve writing variety.
Read guideHow to Convert Text to Speech Online
Turn written text into natural-sounding speech audio using our free text-to-speech tool. Multiple voices and languages.
Read guideSecurity Tools
7How to Generate a Strong Password
Create strong, random passwords with customizable length and character sets using our free password generator.
Read guideHow to Check Your Password Strength
Test how strong your password is against brute-force attacks. Get improvement suggestions and estimated crack time.
Read guideHow to Generate a Random String
Generate cryptographically secure random strings for tokens, keys, identifiers, and other security-sensitive purposes.
Read guideHow to Encrypt Text with a Password
Encrypt sensitive text messages using a password. Only someone with the password can decrypt and read the original text.
Read guideHow to Encrypt a File Online
Encrypt any file with a password using AES-256 encryption. Secure documents, images, and archives before sharing.
Read guideHow to Create a Secure Passphrase
Generate a memorable passphrase made of random words that is both strong and easy to remember.
Read guideHow to Generate an API Key
Generate secure random API keys and secret tokens for your applications and third-party integrations.
Read guideTime Tools
6How to Convert a Unix Timestamp to a Date
Convert Unix timestamps (epoch time) to human-readable dates and vice versa. Supports seconds and milliseconds.
Read guideHow to Calculate Days Between Two Dates
Find the exact number of days, weeks, months, and years between any two dates with our free date calculator.
Read guideHow to Convert Time Between Timezones
Convert any time from one timezone to another instantly. Perfect for scheduling international meetings and calls.
Read guideHow to Set a Countdown Timer Online
Set a countdown timer or stopwatch directly in your browser. Perfect for presentations, cooking, and productivity.
Read guideHow to Format a Date in a Custom Pattern
Format dates in any pattern using standard tokens like YYYY, MM, DD, HH, mm, ss. Preview results in real time.
Read guideHow to Calculate Business Days Between Dates
Count only weekday (Monday-Friday) working days between two dates. Exclude weekends for accurate business timelines.
Read guideUnit Converters
5How to Convert Inches to Centimeters
Convert inches to centimeters and back instantly. Essential for international measurements and unit conversions.
Read guideHow to Convert Pounds to Kilograms
Convert pounds (lbs) to kilograms (kg) and other weight units instantly with our free online converter.
Read guideHow to Convert Fahrenheit to Celsius
Convert temperatures between Fahrenheit and Celsius instantly. Also supports Kelvin for scientific calculations.
Read guideHow to Convert MB to GB
Convert between megabytes, gigabytes, terabytes, and all digital storage units. Supports both binary and decimal.
Read guideHow to Convert Square Feet to Square Meters
Convert area measurements between square feet and square meters for real estate, construction, and international use.
Read guideDeveloper Tools
12How to Format JSON Online
Beautify and format messy JSON data with proper indentation, syntax highlighting, and error detection.
Read guideHow to Encode Text to Base64
Convert text, files, or binary data to Base64 encoding and decode Base64 strings back to their original form.
Read guideHow to URL Encode a String
Encode special characters in URLs to ensure they are transmitted correctly. Decode URL-encoded strings back to readable text.
Read guideHow to Generate a SHA-256 Hash
Create SHA-256 cryptographic hashes from any text input. Useful for data integrity verification and security.
Read guideHow to Test a Regex Pattern Online
Write, test, and debug regular expressions with real-time matching, syntax highlighting, and explanations.
Read guideHow to Generate a UUID
Generate universally unique identifiers (UUID v4) and NanoIDs for databases, APIs, and application development.
Read guideHow to Encode HTML Entities
Convert special characters to HTML entities and vice versa. Prevent XSS and display special characters correctly.
Read guideHow to Beautify HTML, CSS, and JavaScript
Format and beautify minified or messy HTML, CSS, and JavaScript code with proper indentation and structure.
Read guideHow to Convert JSON to CSV
Transform JSON arrays and objects into CSV spreadsheet format. Perfect for importing data into Excel or Google Sheets.
Read guideHow to Convert JSON to XML
Transform JSON data into well-formed XML format for APIs, configuration files, and data interchange.
Read guideHow to Validate XML Online
Check XML documents for well-formedness and syntax errors. Find and fix issues before deploying configurations.
Read guideHow to Minify CSS and JavaScript
Reduce CSS and JavaScript file sizes by removing whitespace, comments, and unnecessary characters for faster page loading.
Read guideMarkdown Tools
4How to Write Markdown with Live Preview
Write Markdown in a full-featured editor with real-time preview, syntax highlighting, and export options.
Read guideHow to Convert Markdown to HTML
Transform Markdown text into clean, valid HTML code. Perfect for web publishing and CMS integration.
Read guideHow to Create a Markdown Table
Generate properly formatted Markdown tables using a visual table builder. No need to manually align pipes and dashes.
Read guideHow to Convert HTML to Markdown
Convert HTML code to clean Markdown syntax. Great for migrating web content to Markdown-based platforms.
Read guideAudio Tools
20How to Convert Audio Files to MP3 Online for Free
Convert audio files between MP3, WAV, OGG, AAC, and FLAC formats instantly in your browser. No software installation or account required.
Read guideHow to Compress Audio Files Without Losing Quality
Reduce audio file sizes for faster uploads, easier sharing, and storage savings while preserving audio clarity and fidelity.
Read guideHow to Trim an Audio Clip Online
Cut and trim audio files to exact timestamps with precision. Remove unwanted sections from recordings, songs, or podcasts directly in your browser.
Read guideHow to Merge Multiple Audio Files into One
Combine two or more audio files into a single continuous track. Perfect for joining podcast segments, music medleys, or multi-part recordings.
Read guideHow to Split an Audio File into Multiple Parts
Divide a long audio file into separate segments at specific timestamps or by equal duration. Ideal for splitting albums, long recordings, or audiobook chapters.
Read guideHow to Remove Silence from Audio Recordings
Automatically detect and remove dead air, long pauses, and silent gaps from podcasts, voiceovers, and recordings to tighten pacing.
Read guideHow to Add Fade In and Fade Out to Audio
Apply smooth fade-in and fade-out effects to audio tracks for professional transitions. Eliminate abrupt starts and harsh endings in your recordings.
Read guideHow to Change Audio Playback Speed Without Distortion
Speed up or slow down audio files while preserving pitch and clarity. Perfect for adjusting podcast speed, transcription work, or music practice.
Read guideHow to Change the Pitch of an Audio File
Shift the pitch of audio up or down by semitones without changing the tempo. Useful for music transposition, vocal tuning, and creative sound design.
Read guideHow to Reverse an Audio File Online
Play audio backwards by reversing the waveform. Create reverse effects for music production, sound design, or just for fun with any audio file.
Read guideHow to Boost the Volume of an Audio File
Increase the volume of quiet audio recordings without clipping or distortion. Fix low-volume podcasts, recordings, and music tracks instantly.
Read guideHow to Use an Audio Equalizer to Adjust Sound
Shape your audio with a parametric equalizer. Boost or cut specific frequencies to improve clarity, warmth, brightness, or bass response in any recording.
Read guideHow to Remove Background Noise from Audio Recordings
Clean up noisy recordings by removing hum, hiss, wind noise, and ambient sounds. Restore clarity to podcasts, interviews, and voice recordings.
Read guideHow to Enhance Voice Quality in Audio Recordings
Improve vocal clarity, reduce room reverb, and make speech more intelligible with one-click voice enhancement for podcasts, calls, and voiceovers.
Read guideHow to Boost Bass in an Audio File
Add deep, powerful bass to music tracks, car audio files, or any recording. Enhance low-frequency impact without muddying the mix.
Read guideHow to Normalize Audio Levels for Consistent Volume
Bring all your audio files to a consistent loudness level. Essential for podcast episodes, music playlists, and multi-track projects where volume varies.
Read guideHow to Record Your Voice Online Using a Browser
Record high-quality voice audio directly in your browser with no software to install. Perfect for quick voiceovers, voice notes, and podcast recordings.
Read guideHow to Change the Sample Rate of an Audio File
Resample audio files to different sample rates for compatibility with specific devices, platforms, or professional audio standards.
Read guideHow to Edit Audio File Metadata and ID3 Tags
Edit title, artist, album, genre, year, and cover art metadata in MP3, FLAC, and other audio files. Fix mislabeled tracks in your music library.
Read guideHow to Batch Convert Multiple Audio Files at Once
Convert dozens or hundreds of audio files between formats simultaneously. Save hours compared to converting files one at a time.
Read guide