Free Tool Guides & Tips for Creators
Guides, tips, and how-tos for creators and marketers using at-use.com tools.
How to Convert HEIC to JPG Online — Free, No Account
Step-by-step guide to converting HEIC files from your iPhone to JPG online. No software to install, no account required. Works on Windows, Mac, and Android.
Read more BlogHow to Convert PNG to WebP Online — Free Converter
Convert PNG images to WebP format online for free. Smaller file sizes, full transparency support, no account required. Server-side conversion, up to 20 MB.
Read more BlogHow to Compress JPEG Without Losing Quality — Free Online Tool
Reduce JPEG file size without visible quality loss. Choose the right compression level for web uploads, email attachments, and printing. Free, server-side, no account.
Read more BlogConvert RAW Photos to JPG Online — CR2, NEF, ARW, DNG
Convert RAW photo files from Canon (CR2), Nikon (NEF), Sony (ARW), and other cameras to JPG online. Server-side via ImageMagick, up to 20 MB, no account.
Read more BlogRemove Image Background Online — Free, No Account
Remove the background from any image online for free. Works on product photos, portraits, and logos. No account, no watermark. Server-side, up to 20 MB.
Read more BlogFree Online JSON Formatter and Validator
Format, validate, and minify JSON in your browser. Syntax errors show the exact line and column. Free, no account, nothing leaves your browser tab.
Read more BlogHow to Check DNS Records Online — Free DNS Lookup Tool
Query A, AAAA, MX, TXT, CNAME, NS, SPF, and DMARC records for any domain. Results from our server — independent of your ISP's DNS cache. Free, no account.
Read more BlogFree Online Password Generator — Strong, Random Passwords
Generate strong, random passwords in your browser. Choose length and character types. Nothing is stored — password generation is entirely client-side. Free, no account.
Read more BlogFree Online QR Code Generator — No Account, No Watermark
Generate QR codes for URLs, plain text, or Wi-Fi credentials. Download as PNG. No account, no watermark, no expiry. Free, runs in your browser.
Read more BlogJWT Decoder Online — Decode Any JWT Token Free
Paste a JWT token and see the header, payload, and claim timestamps as formatted JSON. Nothing stored or logged. Free, no account, runs in your browser.
Read more BlogUnix Timestamp Converter — Epoch Time to Date and Back
Convert Unix timestamps to human-readable dates and dates to Unix timestamps. Supports seconds and milliseconds. Free online tool, no account, runs in your browser.
Read more BlogHow to Merge PDF Files Online — Free, No Account
Combine multiple PDF files into one online. Reorder pages before merging. Server-side processing, up to 20 MB per file, no account required. Free.
Read more BlogFree Online Regex Tester — Test Regular Expressions Instantly
Test regular expressions against a string and see matches highlighted in real time. Supports common regex flags. Free, no account, runs in your browser.
Read more BlogExtract EXIF Data from Photos Online — Free EXIF Viewer
Read the EXIF metadata from any photo: GPS coordinates, camera model, shoot date, exposure settings, and more. Free, no account, nothing stored.
Read more BlogBase64 Encoder / Decoder Online — Free, No Account
Encode text or binary strings to Base64, or decode a Base64 string back to plain text. Runs entirely in your browser. Nothing stored or sent to a server.
Read more BlogFree Online UUID Generator — RFC 4122, Version 4
Generate UUIDs (version 4) in your browser. Bulk-generate up to 100 at once, copy individually or all at once. RFC 4122 compliant. Free, no account.
Read more BlogGenerate a Hash Online — MD5, SHA-256, SHA-512 Free
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text. Runs in your browser — nothing sent to a server. Free, no account.
Read more BlogCron Expression Builder Online — Build and Test Cron Schedules
Build cron expressions visually and see exactly when your cron job will fire. Supports standard 5-field and extended 6-field expressions. Free, no account.
Read more BlogOnline Text Diff Checker — Compare Two Texts Side by Side
Paste two blocks of text and see what changed — additions, deletions, and modifications highlighted. Free, no account, runs in your browser.
Read more BlogHow to Check if a Website Is Online or Down
Check whether a website is online or down right now. Get the HTTP status code and response time from our independent server. Tells you if it's down for everyone or just you.
Read more BlogFree Online Timezone Converter — Convert Time Between Zones
Convert a specific time from one timezone to another. Handles daylight saving time automatically. Free online tool, no account, works in your browser.
Read more BlogFree Online URL Encoder / Decoder
Encode special characters in a URL or decode a percent-encoded string back to plain text. Works with query parameters, fragments, and full URLs. Free, browser-side.
Read more Blog10 Free Developer Tools You Can Use Without Installing Anything
Ten browser-based developer tools that work without installation — JSON formatter, JWT decoder, regex tester, UUID generator, hash generator, and more. Free, no account.
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Is It Down or Just You? How to Check If a Website Is Down
How online status checkers work, what HTTP status codes mean, and how to tell if a website is down for everyone or just you — including common causes and what to do next.
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HEIC to JPG: What HEIC Files Are and Why They Won't Open Everywhere
Apple switched iPhones to HEIC in iOS 11. Here's what HEIC actually is, why compatibility is still limited in 2026, and the fastest way to convert without quality loss.
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How to Convert WebP to PNG (and When PNG Is the Right Choice)
WebP is the right format for web delivery. PNG is the right format for design tools, document editors, and apps that don't support WebP. Here's what actually changes during the conversion and when to use each format.
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DNS Propagation Explained: Why Domain Changes Take Time (and How to Track Them)
When you update a DNS record, the change doesn't apply instantly — different users see different results for hours. Here's how DNS caching works, what TTL controls, and how to check whether propagation is complete.
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How to Create a Favicon From Any Image (PNG, JPG, or WebP)
A favicon is the small icon in browser tabs and bookmarks. Setting it up correctly means covering ICO for legacy tools, PNG for modern browsers, and the Apple touch icon for iOS home screens. Here's the full setup from any starting image.
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Free Developer Tools on at-use.com — The Complete List
38 browser-based developer tools covering JSON, YAML, XML, CSS, HTML, encoding, timestamps, JWTs, QR codes, and more. No login required. No file size limits on browser-side tools.
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How to Check If Your Brand Colors Are Accessible (Free WCAG Guide for Designers)
Your brand colors might look great — and still fail WCAG contrast requirements for text, buttons, and interactive states. Here's how to check your full palette and fix what fails, before your design system is built.
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How to Compress Images Online for Free — No Signup, No Watermark
Compress JPEG, PNG, WebP, HEIC, AVIF, BMP, and TIFF files online for free. No file count limits, no signup, no watermark. Up to 20 MB per file.
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AVIF vs WebP in 2026: Which Format Should You Use?
A practical comparison of AVIF and WebP for web images in 2026 — compression, browser support, encoding speed, and when to choose each format.
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WebP in 2026: Is It Still Worth Using?
AVIF is faster at compression and JPEG XL just landed in Chrome 117+. So where does WebP stand today — and when should you still choose it over newer formats?
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