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Process PDFs, images, code, and calculations securely in your browser. All computations run locally on your device—your files and data are never uploaded to any cloud server.
Remove the background from any image in your browser using an on-device model.
Compress images locally without losing quality. Save space and bandwidth.
Resize images to exact pixel dimensions, percentages, or social media presets.
Crop images with interactive freeform, aspect ratio locks, and presets.
Convert images between PNG, JPG, and WEBP formats securely in your browser.
Enlarge images 2x or 4x in your browser using canvas scaling and sharpening. This is not a neural upscaler.
Rotate images 90°, 180°, 270° or flip them horizontally and vertically.
Add text or image watermarks with adjustable opacity, size, and rotation.
View and extract hidden EXIF metadata from photos instantly.
Convert Apple iPhone HEIC and HEIF photos to high-quality JPG or PNG images directly in your browser.
Convert one or multiple images into a high-quality PDF document.
Combine multiple PDFs into one unified document.
Extract pages or separate a PDF into multiple documents.
Reduce PDF file size while maintaining visual quality.
Convert every page of a PDF into high-quality JPG or PNG images.
Rotate individual pages or the entire PDF document.
Select specific pages from a PDF to save as a new document.
Remove unwanted pages from a PDF document instantly.
Drag and drop pages to change the order of a PDF document.
View, edit, or remove metadata from a PDF file.
Encrypt PDF documents with AES-256 password protection and custom permissions locally.
Format, minify, and validate JSON data instantly with syntax highlighting.
Encode text and files to Base64, or decode Base64 back to raw data.
Encode and decode URLs properly for safe transmission over the internet.
Decode JSON Web Tokens locally. View header, payload, and expiry without sending secrets to any server.
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes securely in the browser.
Generate single or bulk v4 UUIDs instantly.
Generate high-quality QR codes for URLs, text, Wi-Fi, and contacts with SVG/PNG download support.
Convert colors between HEX, RGB, HSL, and HSV with live previews.
Test regular expressions safely and instantly highlight matches in your test strings.
Convert Unix timestamps (seconds and milliseconds) to human-readable dates and vice versa.
Generate SEO-optimized page titles with live character and pixel width counting.
Write perfect meta descriptions with live Google SERP previews for desktop and mobile.
Create valid robots.txt files for your website instantly with an interactive builder.
Generate valid XML sitemaps manually to submit to Google Search Console.
Convert titles into clean, SEO-friendly URL slugs by removing stop words and special characters.
Analyze your content for keyword stuffing and calculate exact word frequencies.
Calculate words, characters, paragraphs, sentences, and estimated reading time.
Convert text across 8 different casing styles including Title Case, camelCase, and snake_case.
Compress your HTML safely to reduce file size and improve page load speed.
Convert text to safe HTML entities or decode entities back to plain text.
Get detailed statistics including word frequency, reading time, and character counts.
Clean up lists by removing duplicate lines while preserving the original order.
Instantly strip blank lines and extra whitespace from your text files.
Sort lines alphabetically, by length, or randomize them instantly.
Reverse strings, words, or line order backwards.
Quickly search for and replace text with case-sensitive and whole-word matching.
Generate placeholder text by words, sentences, or paragraphs for your designs.
Generate random strings, passwords, usernames, or numbers.
Normalize whitespace by removing duplicate spaces and tabs.
Automatically add or remove index-based line numbers to your text.
Calculate mutual fund SIP returns with interactive growth charts.
Calculate monthly loan EMIs with complete amortization schedules.
Estimate loan payments, remaining balance, and total interest.
Calculate compound interest with multiple compounding frequencies.
Calculate maturity amount and interest earned on Fixed Deposits.
Project returns on Recurring Deposits over your chosen tenure.
Calculate the Compound Annual Growth Rate of your investments.
Calculate Indian Income Tax comparing Old vs New Regimes.
Calculate your Body Mass Index (BMI) and find your ideal weight range.
Calculate your Basal Metabolic Rate using the Mifflin-St Jeor equation.
Calculate your daily calorie target for weight loss, gain, or maintenance.
Calculate exact age down to hours/minutes and countdown to next birthday.
Calculate percentage increases, decreases, and differences easily.
Convert length, weight, temperature, volume, time, and data storage.
Convert between global currencies with live offline-capable exchange rates.
SolveBoxNow is a free collection of browser-local tools for PDFs, images, developers, SEO, text, and calculators. Processing runs in your browser so files and inputs stay on your device.