Toolyard Blog
Short, practical guides for everyday file tasks — and the free, private tools that do them in seconds.
Discord Banner, Avatar & Server Sizes
Every Discord image size in one place — banner, avatar, server icon — plus a free resizer.
Twitch Banner, Panel & Profile Sizes
Exact pixel sizes for your Twitch banner, info panels and offline screen.
Spotify Playlist Cover Size
The right square size and format — and why your cover looks blurry.
Substack Image Sizes
Logo, header and in-post image sizes that stay sharp on every screen.
Word Count for Essays and Assignments
What counts, the 10% rule, and how to cut 200 words without losing your argument.
Character Limits Cheat Sheet (2026)
X, meta descriptions, bios and SMS — plus the three limits that behave strangely.
Words to Reading Time
How long your text takes to read or say aloud, with a full conversion table.
How Many Words Is 1, 2, or 5 Pages?
Single and double spaced conversions, and why your real page count runs longer.
How to Open a HEIC File on Windows
iPhone photo won’t open on your PC? Two ways to view it — one of them free.
Why Are My iPhone Photos HEIC?
What HEIC is, how to switch your camera to JPG, and how to convert the ones you already have.
HEIC vs JPG: Which Should You Use?
File size, quality and compatibility compared — and exactly when to convert HEIC to JPG.
Facebook Cover Photo Size (2026)
820×312 on desktop, 640×360 on mobile — and the safe zone that keeps your logo visible on both.
X (Twitter) Image Sizes
Header 1500×500, posts 1600×900, profile 400×400 — and why the timeline crops your pictures.
LinkedIn Image Sizes
Banner 1584×396, post 1200×627, profile 400×400 — plus the crops that catch people out.
Pinterest Pin Size: Why 2:3 Wins
1000×1500 is the sweet spot — tall enough to own the feed, short enough not to get truncated.
How to Turn Screenshots into a Single PDF
Get the page order right, keep the text readable, and send one file instead of twelve attachments.
How to Scan Documents to PDF with Your Phone Camera
Shoot clean, shadow-free pages and combine them into one PDF — no scanner app, nothing uploaded.
How to Convert JPG to PDF
One photo or a hundred — page size, orientation and file size explained, free and private.
How to Compress an Image to 100KB
Hit a hard upload limit — 100KB or any target size — without uploading your photo to a server.
How to Compress a JPEG Without Losing Quality
The quality-slider sweet spot, why re-saving degrades a JPEG, and how to keep photos looking sharp.
How to Reduce Photo File Size on iPhone & Android
Shrink a big phone photo right in your mobile browser — no app to install, nothing uploaded.
Lossy vs Lossless Image Compression Explained
What each really means, which to use for photos vs logos, and whether JPEG is lossy or lossless.
How to Build a Color Palette from a Photo
Which five pixels to sample, the 60-30-10 ratio, and how to check the result is actually readable.
How to Convert HEX to HSL (and Why It’s Worth It)
What the three numbers mean — and how changing just one gives you a whole set of tints and shades.
How to Make a YouTube Thumbnail Without Photoshop
A free five-step workflow to a proper 1280×720 thumbnail — no subscription, no watermark.
How to Resize an Image to Exact Pixel Dimensions
Why “1080 wide” isn’t “1080×1080” — and the two-step method that hits the exact number without stretching.
How to Resize Images for a Faster Website
What width your images actually need, why resizing beats compressing, and how to check the result.
Image Dimensions vs File Size: What’s the Difference?
Pixels, megabytes, DPI and quality explained — and which one to change when an upload gets rejected.
How to Resize an Image on Windows and Mac
The built-in way on Windows, macOS, iPhone and Android — plus one method that works on all of them.
How to Crop a Photo Online Without Uploading It
Every “free” cropper wants your photo on their server first. Crop it in your browser instead — nothing gets uploaded.
How to Crop an Image to a Specific Aspect Ratio
1:1 for profiles, 16:9 for thumbnails, 9:16 for reels. Lock the ratio and crop without stretching the image.
How to Crop a Screenshot on Windows, Mac, and Phone
Snip it, then trim to the exact area — no installs, and your screenshot (chats, emails, IDs) never leaves your device.
Best Free Image Cropper: What to Look For
Six things that separate a good cropper from a sketchy one — starting with whether it uploads your image at all.
How to Add Page Numbers to a PDF
No Acrobat subscription needed. Pick the position, skip the cover page, download in seconds.
How to Make a Circle Profile Picture
Stop letting platforms crop your face badly. Make the round PNG yourself — transparent corners included.
How to Make a Transparent Signature for PDFs and Documents
No scanner, no printer. Draw it once, download a transparent PNG, sign anything in seconds.
How to Compare Two Texts and Find the Differences
Someone sent back "the updated version" with no notes? Spot every changed line instantly.
How to Convert HEIC Photos to JPG on Windows
iPhone photos won't open on your PC? Here's why HEIC breaks Windows — and how to fix it in seconds.
How to Convert JSON to CSV for Excel
Turn an API export into a spreadsheet — flatten nested data and stop Excel mangling your characters.
How to Convert an Image to Base64
Turn a PNG, JPG or SVG into a data URI you can paste into HTML, CSS or an email — and know when not to.
SHA-256 Hash Explained
What a hash really is, why it can never be reversed, and how it differs from encryption — in plain English.
How to Remove EXIF and GPS Data from Photos
Your photos carry the coordinates of your home. Here's what's hidden inside them and how to strip it.
How to URL-Encode Text (Percent Encoding Explained)
What %20 really means, which characters break a link, and how to encode or decode anything in seconds.
How to Make a Meme
Turn any image into a classic top-and-bottom meme — plus how to write a caption that actually lands.
What Is a UUID (and How to Generate One)
What a UUID is, how version 4 works, why collisions never happen, and how to generate one for free.
How to Rotate or Flip a Photo
Turn a sideways shot upright, straighten a horizon, or mirror a selfie — and why phone photos land sideways.
How to Test a Regular Expression
Test a regex live against your own text, with a plain-English guide to the patterns, flags and gotchas.
How to Crop an Image to an Exact Size
Crop to exact pixel dimensions or a locked ratio — 1:1, 16:9, passport size — without losing quality.
How to Convert CSV to JSON
How headers become keys and rows become objects — plus the commas, quotes and numbers that trip people up.
How to Combine Images into One PDF
Merge JPG and PNG images into a single, shareable PDF — how to order pages, pick size and keep quality.
Unix Timestamp Explained
What epoch time is, seconds vs milliseconds, time zones, the 2038 problem — and how to convert one.
YouTube Thumbnail Size: The Complete 2026 Guide
The exact 1280×720 dimensions, the 16:9 rule, file limits — and how to resize any image to fit.
How to Count Words and Characters
Words vs. characters, how counting works, common limits, and how to check any text instantly.
How to Get the Hex Code from an Image
Click any pixel in a photo or screenshot and copy its exact HEX or RGB code.
RGB vs HEX vs HSL: What's the Difference?
Three ways to write the same color — how each works, and when to use which.
How to Add a Watermark to Photos (Free, In Your Browser)
Where to place it, what opacity looks professional, and how to sign your work in seconds.
How to Format and Validate JSON (Free Online Formatter)
Make minified JSON readable — and find the exact character that stops it parsing.
JPG vs PNG vs WebP: Which Image Format Should You Use?
What each format is best at, a side-by-side comparison, and when to convert.
How to Create a Strong Password (That You Can Actually Manage)
Why length beats clever tricks, and a realistic system for unique passwords everywhere.
How to Split a PDF into Separate Pages
Pull out just the pages you need, or break a document into one file per page.
How to Make a Favicon for Your Website
The sizes you really need, and how to design an icon that still reads at 16px.
How to Resize an Image Without Losing Quality
Simple rules for scaling photos up or down while keeping them crisp and correctly shaped.
How to Compress Images for Email
Photos too big to attach? Shrink them below any size limit without a visible quality drop.
How to Convert PNG to JPG (and When To)
Smaller files, wider compatibility — and when you should keep PNG instead.
Instagram Image Sizes: The Complete Guide
Exact dimensions for posts, portraits and stories — so nothing gets awkwardly cropped.
How to Merge PDF Files for Free
Combine receipts, scans or chapters into one PDF — no paid software, nothing uploaded.
How to Make a QR Code in Seconds
Create a QR code for a link, menu or Wi-Fi, and print it so it always scans.