On-device · 70 free converters
Free online convertersPocketCvt
Free online converters for images, PDF, JSON, CSV, and more. Nothing is uploaded — processing never leaves your device.
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SEO hubs for image, data, developer, and document converters.
Free online converters
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- IMOpen →
HEIC to JPG Converter
Convert iPhone HEIC/HEIF photos to JPEG for email, Windows, and the web.
- IMOpen →
WebP to PNG Converter
Turn WebP images into PNG while preserving transparency for design workflows.
- IMOpen →
PNG to WebP Converter
Compress PNGs to WebP for faster pages and better Core Web Vitals.
- IMOpen →
JPG to PNG Converter
Convert JPEG photos to lossless PNG for editing and transparent overlays.
- IMOpen →
Image to Base64 Converter
Encode images as data URIs for CSS, HTML, and email embeds.
- IMOpen →
Base64 to Image Converter
Decode Base64 or data URIs into downloadable PNG or JPG files.
- IMOpen →
SVG to PNG Converter
Rasterize SVG icons and logos to PNG at your chosen scale.
- IMOpen →
Image Resizer & Compressor
Resize and compress images for uploads, email, and faster websites.
- IMOpen →
GIF Frame Extractor
Pull individual PNG frames from animated GIFs and download as a ZIP.
- IMOpen →
PNG to JPG Converter
Convert PNG images to JPEG for smaller files and universal compatibility.
- IMOpen →
WebP to JPG Converter
Turn WebP images into JPEG for apps and email clients that still expect JPG.
- IMOpen →
JPG to WebP Converter
Compress JPEG photos to WebP for faster pages and smaller uploads.
- IMOpen →
HEIC to PNG Converter
Convert iPhone HEIC/HEIF photos to lossless PNG for editing and transparency workflows.
- IMOpen →
Image Rotator
Rotate images by 90°, 180°, 270°, or a custom angle - privately in your browser.
- TEOpen →
Markdown to HTML Converter
Turn Markdown drafts and READMEs into clean HTML with live preview.
- TEOpen →
HTML to Markdown Converter
Migrate CMS HTML content into portable Markdown for docs and blogs.
- TEOpen →
Text Case Converter
Switch text between UPPER, lower, Title, camelCase, snake_case, and more.
- TEOpen →
Word Counter
Count words, characters, sentences, and estimate reading time instantly.
- TEOpen →
Text Diff Checker
Side-by-side GitLens-style diff with red removals, green additions, and synced scrolling.
- TEOpen →
Lorem Ipsum Generator
Generate placeholder paragraphs, sentences, or words for mockups and drafts.
- TEOpen →
Slug Generator
Turn titles into URL-safe slugs with separators and length limits.
- TEOpen →
Line Sort & Unique
Sort, reverse, dedupe, and clean lines of text in one private workspace.
- DAOpen →
CSV to JSON Converter
Parse spreadsheet CSV exports into JSON arrays ready for APIs and apps.
- DAOpen →
JSON to CSV Converter
Flatten JSON object arrays into Excel-friendly CSV downloads.
- DAOpen →
Excel to JSON Converter
Read XLSX spreadsheets in the browser and export sheet data as JSON.
- DAOpen →
JSON to Excel Converter
Turn JSON arrays into downloadable Excel workbooks for non-technical teams.
- DAOpen →
Excel to CSV Converter
Export Excel sheets to CSV for scripts, databases, and imports.
- DAOpen →
CSV to Excel Converter
Convert CSV files into downloadable Excel workbooks for sharing with teams.
- DAOpen →
CSV to Markdown Table
Turn CSV spreadsheets into GitHub-flavored Markdown tables.
- DAOpen →
TSV ↔ JSON Converter
Convert tab-separated values to JSON arrays — and back again.
- DAOpen →
Delimiter Converter
Switch CSV-like data between comma, tab, semicolon, and pipe delimiters.
- DAOpen →
JSON Flatten & Unflatten
Flatten nested JSON to dotted keys, or rebuild nested objects from flat maps.
- DOOpen →
PDF to Text Extractor
Extract searchable plain text from PDFs without uploading your documents.
- DOOpen →
Text to PDF Generator
Generate printable multi-page PDFs from notes, letters, or plain text.
- DOOpen →
Markdown to PDF
Convert Markdown notes to a downloadable PDF entirely in your browser.
- DOOpen →
Find and Replace
Find and replace across documents with optional regex and case sensitivity.
- DEOpen →
JSON Formatter & Validator
Pretty-print, minify, and validate JSON offline with clear error messages.
- DEOpen →
YAML to JSON Converter
Convert Kubernetes and CI YAML configs to JSON - and back again.
- DEOpen →
XML to JSON Converter
Map XML feeds and payloads into structured JSON with pretty printing.
- DEOpen →
URL Encoder & Decoder
Percent-encode and decode query strings and share links safely.
- DEOpen →
HTML Entity Encoder & Decoder
Encode and decode HTML entities for safe embedding of user content.
- DEOpen →
Client-Side Hash Generator
Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 checksums for text or files locally.
- DEOpen →
UUID Generator
Generate bulk UUID v4 identifiers for databases, tests, and APIs.
- DEOpen →
Unix Timestamp Converter
Convert Unix epochs to human dates and ISO 8601 in UTC or local time.
- DEOpen →
Cron Expression to Human Readable
Explain cron schedules in plain English and preview upcoming run times.
- DEOpen →
JSON to YAML Converter
Convert JSON configs to readable YAML for Kubernetes, CI, and docs.
- DEOpen →
JSON to XML Converter
Map JSON objects into XML for legacy APIs, SOAP, and feeds.
- DEOpen →
Base64 Encode & Decode
Encode and decode Base64 text with UTF-8 support for tokens, data URIs, and APIs.
- DEOpen →
JWT Decoder
Decode JWT header and payload locally - signature is never verified or sent.
- DEOpen →
Regex Tester
Test JavaScript regular expressions with live matches and capture groups.
- DEOpen →
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal.
- DEOpen →
SQL Formatter
Pretty-print SQL queries with readable keywords and line breaks.
- DEOpen →
JWT Generator
Create unsigned or HS256-signed JWTs locally from a JSON payload and secret.
- DEOpen →
HMAC Generator
Compute HMAC-SHA1/256/512 signatures for webhooks and API auth — privately on-device.
- DEOpen →
MD5 Hash Generator
Generate MD5 checksums for text or files entirely in your browser.
- DEOpen →
SHA-1 Hash Generator
Compute SHA-1 digests for legacy checksums and Git-style workflows.
- DEOpen →
SHA-256 Hash Generator
Generate SHA-256 checksums for text and files with Web Crypto.
- DEOpen →
AES Encrypt & Decrypt
Encrypt and decrypt text with AES-GCM derived from a passphrase (PBKDF2).
- DEOpen →
URL Parser
Break a URL into protocol, host, path, query params, and hash — privately.
- DEOpen →
Color Format Converter
Convert HEX, RGB, HSL, and HSV with a live swatch and CSS snippets.
- DEOpen →
WCAG Contrast Checker
Check foreground/background contrast ratios against WCAG AA and AAA.
- DEOpen →
CSS Gradient Generator
Build linear or radial CSS gradients with a live preview and copy-ready CSS.
- DEOpen →
PX ↔ REM Converter
Convert px, rem, and em with a configurable root font size.
- DEOpen →
Box Shadow Generator
Tune CSS box-shadow with live preview — offsets, blur, spread, color, inset.
- UTOpen →
QR Code Generator & Scanner
Create and decode QR codes offline for links, text, and Wi‑Fi strings.
- UTOpen →
Password Generator
Generate strong random passwords with length and character-set controls.
- UTOpen →
Unit Converter
Convert length, weight, temperature, and data-size units instantly.
- UTOpen →
Timezone Converter
Convert a date and time across UTC and major world timezones.
- UTOpen →
Random String Generator
Generate cryptographically random strings: hex, Base64URL, alphanumeric, or symbols.
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Why convert online without uploading?
Private by design
Files are processed on your device with JavaScript and WebAssembly. Nothing is sent to PocketCvt servers.
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Open a free online converter, drop a file or paste text, and download the result. Free for personal and professional use.
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Conversions run in your tab — no upload queue, no waiting on a remote server to finish the job.