Image tools
📖How to Open HEIC Files on Windows (3 Easy Ways)iPhones save photos in HEIC format to save space, but Windows often shows "file not supported" or a blank thumbnail. Here are…📖How to Reduce Image File Size Without Losing QualityUpload form says "file too large"? Email bouncing? Most photos can be made 60-90% smaller without anyone noticing a difference. Here is…📖How to Remove Location Data from Photos Before SharingEvery photo your phone takes can store the exact GPS coordinates of where it was taken, plus the date, time and phone…📖Social Media Image Sizes Cheat Sheet (2026)Wrong image size means cropped faces and blurry posts. Here are the sizes that work on every major platform – and a…📖How to Reduce Photo Size to 100 KB (or 50 KB) for Online FormsVisa, passport, exam and job portals often reject photos over 100 KB, 50 KB or even 20 KB. Here's the fastest way…📖How to Make a Round Profile Picture (Transparent PNG)Most apps crop your profile photo into a circle anyway – doing it yourself lets you decide exactly what's in the frame.📖How to Watermark Photos (Without Ruining Them)A good watermark discourages theft without distracting from the photo. Here's how photographers and small businesses do it.📖Why Are Images Saving as WebP? (And How to Get JPG Instead)You right-click an image, save it, and get a .webp file your editor or upload form won't accept. Here's why it happens…📖How to Copy Text from an Image or Screenshot (OCR)Need the text from a screenshot, a photo of a document or a scanned page? Optical character recognition (OCR) turns it into…📖How to Scan a QR Code from a Screenshot or PhotoQR codes are made to be scanned with a camera, but what if the code is on your own phone screen or…📖How to Add a Favicon to Your Website (WordPress, Shopify & HTML)The favicon is the little icon in browser tabs, bookmarks and phone home screens. Missing one makes a site look unfinished.📖How to Make a GIF from Photos (Free, No App)Animated GIFs are perfect for quick product demos, before/after sequences and fun posts. You can make one from photos in a minute.📖How to Blur Faces, Number Plates and Private Info in PhotosBefore posting a photo of an event, a car or a screenshot of an email, it's worth hiding what shouldn't be public.…📖How to Post a 3×3 Instagram Grid (Puzzle Feed) the Right WayA giant image spread across your profile grid grabs attention – if the tiles line up. Here's how to split and post…📖How to Crop a Photo to an Exact Size or RatioUpload forms and social platforms want specific shapes. Cropping gets the shape right; resizing gets the pixel size right. Usually you need…📖JPG vs PNG vs WebP vs HEIC: Which Image Format Should You Use?Picking the right image format makes files smaller, sharper and accepted everywhere. Here's the short version.📖PNG vs JPG: Which Is Better and When to ConvertPNG and JPG both work everywhere – but using the wrong one can make files 10 times bigger or make text blurry.📖Why Are My Photos Sideways After Uploading? (And How to Fix It)The photo looks fine on your phone, then appears sideways on a website or in an email. The culprit is a hidden…📖How to Find the HEX Code of a Color in an ImageNeed your brand's exact colour for a new flyer, or want to match a colour from a website? You can pull it…📖How to Create a Digital Signature Image (Transparent PNG)A signature image lets you sign documents in seconds without printing. A transparent background makes it sit naturally on any document.📖How to Make a Meme (That People Actually Share)The classic meme format – bold white text with a black outline above and below a picture – still works because it's…📖How to Make a Photo Collage for Instagram, Facebook or PrintA collage tells a story in one image – an event, a before/after, a product range. The secret is picking the right…📖How to Make Screenshots Look Professional for Posts and SlidesRaw screenshots look unfinished next to designed posts. A background, some padding and a soft shadow make them look intentional.📖How to Add a Border to a Photo (and Post Full Photos on Instagram)Borders frame a photo and, on Instagram, let you post a full landscape or tall photo without cropping.📖How to Turn a Picture into ASCII ArtASCII art draws pictures with letters and symbols. It's great for code comments, README files, terminal banners and retro-style posts.📖How to Fix a Dark or Dull Photo with Brightness and ContrastMost disappointing photos need three small adjustments, not a professional editor.📖How to Make a Photo Black and White (Free, Any Device)Black and white removes distractions and puts the focus on light, shape and expression.📖How to Convert SVG to PNG (Any Size, Transparent Background)SVG is perfect for the web but many apps won't accept it. PNG works everywhere.📖How to Enlarge an Image Without Making It BlurryA website rejects your photo as too small, or a print comes out soft. Here is what enlarging can and can't do.
PDF tools
📖How to Combine PDF Files into One (Free, No Upload)Need to send one PDF instead of five? You can merge PDFs in under a minute for free – and without uploading…📖How to Convert a PDF to JPG (Every Page as an Image)Need a PDF page as an image for a post, slide or an upload form that only accepts JPG? Here is the…📖How to Turn Photos into One PDF (iPhone, Android & PC)Need to send several photos of documents as one PDF? Here are the quickest free ways on every device.📖How to Reduce PDF File Size for Email and Upload FormsMost email services cap attachments around 20-25 MB, and many upload portals allow only 2-5 MB. Here's why your PDF is so…📖How to Extract or Remove Pages from a PDF (Free)Only need page 3 of a 40-page contract? Or want to drop a blank page before sending? Here's how to extract, remove…📖How to Sign a PDF Without Printing ItPrinting, signing, scanning and emailing back is the slow way. You can add your signature to a PDF in under a minute…📖How to Add Page Numbers to a PDF (Without Acrobat Pro)Merged a few documents into one PDF and now it needs page numbers? You don't need a paid PDF editor.📖How to Rotate a PDF and Save It PermanentlyRotating a PDF in your viewer only changes your view – send it on and the pages are sideways again. Here's how…📖How to Watermark a PDF (CONFIDENTIAL, DRAFT or Your Name)A watermark tells everyone a document is a draft, confidential or a sample – and discourages it being passed around as final.📖How to Remove Hidden Metadata (Author, Dates) from a PDFEvery PDF can carry hidden details: who created it, their company, the software version and exact creation dates. That can be awkward…📖How to Copy Text from a PDF That Won't Let YouSelecting text in a PDF sometimes grabs nothing, jumbles the order or isn't allowed at all. Which fix you need depends on…📖How to Delete Pages from a PDF for FreeBlank pages in a scan, a cover sheet you don't want to send, an appendix nobody needs – removing them shouldn't require…
Website & security
📖How to Check Your DMARC and SPF Records (and Fix Them)If your domain has no DMARC record – or one set to p=none – criminals can send emails that look like they…📖Your Password Was in a Data Breach – What to Do NowFinding your password in a breach list isn't a disaster – but it means criminals can try it on every site you…📖How to Fix the "Not Secure" Warning on Your Website"Not secure" in the address bar scares visitors away and hurts trust. It almost always has one of four causes – and…📖How to Create a Strong Password You Can Actually RememberMost password advice is outdated. Long beats complicated, unique beats clever, and a password manager beats your memory.📖How to Tell if a Link Is Safe Before You Click ItMost phishing relies on you not reading the link carefully. Learning to read a URL takes two minutes and stops most scams.📖On-Page SEO Checklist: 13 Things to Fix on Every PageBefore chasing backlinks, make sure each important page gets the basics right. These are the on-page checks that matter most.📖How to Tell if an Email Is Fake (Check the Headers)A display name can say anything. The email headers show who really sent a message – and whether it passed authentication.📖How to Check Who Owns a Domain (and When It Expires)Want to buy a domain someone else has, check how old a website really is, or make sure your own domain won't…📖301 vs 302 Redirects: Which to Use (and How to Check Yours)Redirects send visitors and search engines from one URL to another. Using the wrong type, or chaining too many, quietly costs speed…📖How to Create and Submit a Sitemap to GoogleA sitemap lists the pages you want search engines to find. Submitting it helps new and updated pages get discovered faster.📖How to Check DNS Records (A, MX, TXT, CNAME) for Any DomainDNS records are the instructions that point a domain to its website and email. Checking them is the first step whenever something…📖How to Add Security Headers to Your Website (WordPress, Cloudflare, Apache)Security headers are free, one-time settings that stop whole classes of attacks. Most small business sites have none. Here's how to add…📖Why Are My Emails Going to Spam? Check Blacklists and Fix ItWhen customers stop getting your emails, the cause is usually a blacklist listing or missing email authentication. Both are fixable.📖How to Find Out What a Website Is Built WithWant to know if a competitor uses WordPress or Shopify, whether a site has Google Analytics installed, or what to quote for…📖How to Fix Mixed Content Warnings (HTTPS Not Fully Secure)You installed SSL, yet the padlock is missing or parts of the page are broken. Mixed content – files still loaded over…📖How to Check Your Website Speed (and Fix the Big Problems)A slow site loses visitors before they see anything. You don't need to be a developer to find what's slowing yours down.📖How to Check if a Domain Name Is Available (and What to Do If It's Taken)The right domain is short, easy to say and available. Here's how to check quickly and what to do when your first…📖What Is My IP Address and What Can Someone Do With It?Every device online has an IP address – your internet's return address. Here's what it reveals and when you'd need to know…📖Why Your Link Preview Looks Wrong on Facebook, LinkedIn or WhatsAppWhen you share a link, platforms read Open Graph tags to build the preview card. Missing or wrong tags mean no image,…📖How Strong Is My Password? How Cracking Time Is Estimated"Strong" isn't about one symbol and a capital letter. It's about how many guesses an attacker would need.📖How to Set Up DMARC for Your Business Domain (Step by Step)If your domain has no DMARC record, anyone can send email that looks like it came from you. Setting it up takes…📖How to Create an SPF Record (and Avoid the 10-Lookup Trap)An SPF record is one line of text in your DNS that lists who may send email for your domain. It is…
Text tools
📖How Many Words Is a 5-Minute Speech? (Plus 1-30 Minute Chart)Most people speak at 130-150 words per minute when presenting, so a 5-minute speech is roughly 650-750 words. Here's a quick chart…📖Title Case Rules: Which Words to Capitalize in HeadlinesTitle case means capitalising the important words in a title. The tricky part is the small words – and style guides disagree…📖How to Compare Two Documents and Find the DifferencesSomeone sent back 'a few small edits' to a contract? Don't read both versions side by side – let a diff tool…📖How to Change the Font in Your Instagram Bio (Bold, Italic & More)Instagram doesn't let you change fonts, yet you see bold and script bios everywhere. The trick is special Unicode characters that look…📖How to Pick a Giveaway Winner Fairly (Instagram, Facebook & Email)A giveaway builds trust only if people believe the draw was fair. Here's how to pick winners transparently.📖Morse Code Alphabet: Letters, Numbers and How to Learn ItMorse code turns letters into short and long signals – dots and dashes. It's still used by radio amateurs, pilots and as…📖What Is Lorem Ipsum and When Should You Use It?"Lorem ipsum dolor sit amet…" fills countless mockups. It's placeholder text that looks like real writing without distracting readers with meaning.📖How to Have Text Read Aloud on Any DeviceHearing text read aloud is great for proofreading, for listening while you work, and for people who find long reading tiring.📖Does Keyword Density Still Matter for SEO in 2026?There's no magic keyword percentage. Search engines understand topics and synonyms – but stuffing the same phrase still reads badly and can…📖How to Use Emojis in Business Posts and Emails (Without Looking Unprofessional)Used well, emojis make posts scannable and friendlier. Used badly, they look spammy or unclear. A few simple rules help.📖How to Remove Duplicates from a List (Without Excel)Merged two lists and ended up with repeats? You don't need a spreadsheet to clean them.📖How to Remove Line Breaks from Text Copied from a PDFPaste text from a PDF and every line ends abruptly halfway across the page. Here's how to fix it in seconds.📖How to Type Faster: A Realistic Plan to Add 20 WPMTyping is a skill most of us use for hours a day and never practise. Small improvements save real time.
Calculators
📖How to Calculate Percentage Increase and Decrease (with Examples)Percentage change tells you how much something grew or shrank relative to where it started. One formula covers both increases and decreases.📖The Pomodoro Technique: How 25-Minute Sprints Beat ProcrastinationThe Pomodoro Technique is the simplest focus system there is: work for 25 minutes, rest for 5, repeat. Here's how to make…📖How to Convert cm to Inches (and Inches to cm) FastOne number does it: 1 inch = 2.54 centimetres exactly. Divide centimetres by 2.54 to get inches; multiply inches by 2.54 to…📖How to Schedule a Meeting Across Time Zones (Without Mistakes)Working with clients in other countries means someone is always early or late – unless you plan for time zones properly.📖How Much House Can I Afford? The Simple Rules Lenders UseLenders mostly look at how your monthly housing cost compares to your income. These common rules of thumb give you a starting…📖What Is a Healthy BMI? How to Calculate and Read Your ResultBody mass index (BMI) is a quick screening number that compares weight to height. Here's what the ranges mean – and what…📖How Loan Interest Works: Monthly Payments and Total Cost ExplainedTwo loans with similar monthly payments can cost thousands more or less over time. Understanding how interest works helps you compare offers…📖How Much to Tip in the US: Restaurants, Delivery, Salons and MoreTipping norms in the US can confuse visitors and locals alike. These are the typical ranges people use – adjust for service…📖How to Calculate Exact Age from a Date of BirthForms, school admissions and benefits often need an exact age on a specific date. Here's how to calculate it correctly – by…📖How Compound Interest Works (With Real Examples)Compound interest is interest earned on your interest. Given time, it does most of the work of growing savings.📖How to Calculate a Discount (Percent Off and Stacked Discounts)"30% off, plus an extra 20% at checkout" doesn't mean 50% off. Here's how to work out what you'll actually pay.📖How to Calculate Sales Tax (and Work Backwards from a Total)Whether you're pricing products or checking a receipt, sales tax is simple maths once you know which direction you're going.📖How to Calculate Your GPA (4.0 Scale) Step by StepGPA is an average of your grades weighted by how many credits each course is worth. Here's how to calculate it yourself.📖How to Pick Random Numbers Fairly (Raffles, Lotteries and Games)Whether it's a raffle ticket, a lottery pick or deciding who goes first, you want numbers nobody can predict or influence.📖Margin vs Markup: The Difference That Costs Businesses MoneyAdd 50% to your cost and you might think you make a 50% margin. You make 33%. That mix-up quietly underprices thousands…📖How to Work Out a Date 30, 60 or 90 Days from TodayPayment terms, notice periods and return windows are all 'X days from' something. Counting on a calendar invites mistakes.📖How Many Calories Do I Need a Day?Calorie needs depend on your size, age, sex and how much you move. A simple equation gets surprisingly close.📖Aspect Ratios Explained: 16:9, 4:3, 1:1 and Where to Use ThemAspect ratio is simply width compared with height. Get it wrong and your picture is stretched, cropped or boxed in black bars.📖How to Read and Write Roman NumeralsRoman numerals still appear on clocks, film credits, book chapters and Super Bowls. Seven letters and two rules cover everything.📖How to Convert a Salary to an Hourly Rate (and Back)Comparing a salaried job with an hourly one – or quoting a freelance rate – starts with the same conversion.
Developer & marketing
📖How to Make a Wi-Fi QR Code (Guests Scan to Connect)A Wi-Fi QR code lets guests join your network just by pointing their camera at it. Perfect for homes, cafes, offices and…📖How to Make a QR Code for Your Restaurant Menu (Free, No Expiry)A menu QR code lets guests open your menu on their phone in a second. Done right, it costs nothing and never…📖How to Record Your Screen on Windows or Mac Without Installing AnythingNeed a quick tutorial, bug report or demo video? You don't need paid software – here are the free built-in options.📖How to Write an Invoice: What to Include (Freelancers & Small Businesses)A clear invoice gets you paid faster and keeps your records clean at tax time. Here's what to put on it.📖How to Format, Validate and Fix JSON ErrorsOne stray comma breaks an entire JSON file. Here's how to format it so it's readable, find errors fast, and avoid the…📖How to Verify a File Checksum (SHA-256, MD5) on Any ComputerSoftware sites publish a checksum (a long string like 3a7bd3e2…) next to downloads. If your file's hash matches, it arrived intact and…📖WCAG Color Contrast Explained: AA vs AAA (With Examples)Low-contrast text is hard to read for millions of people – and in bright sunlight, for everyone. WCAG sets clear minimums.📖How to Make a QR Code with Your Logo That Still ScansA branded QR code gets more scans than a plain one – but a logo in the wrong place or colours with…📖How to Use UTM Parameters to Track Your Marketing (GA4)UTM tags tell Google Analytics exactly which email, post or ad brought each visitor. Without them, a lot of traffic shows up…📖What to Include in a Professional Email Signature (Examples)Your email signature is seen on every message you send. A clean one builds trust; a cluttered one gets ignored or lands…📖What Is Base64 Encoding? (And Why It Isn't Encryption)Base64 turns any data – text, images, files – into plain letters and numbers so it can travel safely through systems that…📖Markdown Cheat Sheet: Headings, Lists, Links, Tables and CodeMarkdown lets you format text with simple symbols. It's used on GitHub, Notion, Reddit, Slack, Discord and many blogs.📖How to Convert CSV to JSON (and JSON Back to Excel)CSV is how spreadsheets export data; JSON is what apps and APIs speak. Converting between them is a daily task for marketers…📖Binary, Hex and Decimal Explained (With Quick Conversions)Computers count in binary, programmers write in hex, and humans think in decimal. They're just different ways of writing the same numbers.📖How to Make Barcodes for Products and InventoryBarcodes are easy to generate. The important question is whether you need an officially registered number.📖How to Test Your Webcam and Microphone Before a CallNothing derails a client call like 'can you hear me?'. A 30-second check before the meeting avoids it.📖Regex for Beginners: 10 Patterns You'll Actually UseRegular expressions look scary but follow a few simple rules. These are the patterns people reach for most.📖Cron Expression Examples: Every 5 Minutes, Daily, Weekdays and MoreCron schedules jobs with five fields: minute, hour, day of month, month and day of week. These are the expressions you'll use…📖How to Convert a Unix Timestamp to a Date (and Back)APIs, logs and databases often store time as a single number like 1767225600. That's a Unix timestamp – seconds since 1 January…📖Subnet Cheat Sheet: CIDR, Subnet Masks and Host CountsSubnetting splits an IP network into smaller pieces. Most of the time you just need the mask, the host range and how…📖Does My Small Business Website Need a Privacy Policy?If your website has a contact form, analytics, cookies or ads, you collect personal data – and you almost certainly need a…📖How to Trim an Audio File (MP3, M4A, WAV) for FreeNeed to cut silence off a voice memo, keep one part of a song for a video, or make a ringtone? Trimming…📖How to Add Line Breaks and Spaces to Instagram CaptionsYou write a nicely spaced caption and Instagram squashes it into one block. Here's why, and how to keep your spacing.📖How to Decode a JWT (and What Each Part Means)A JWT looks like random characters, but it's three Base64URL-encoded parts separated by dots. Decoding shows exactly what the token claims.📖What Is URL Encoding (%20) and When Do You Need It?URLs can only contain certain characters. Spaces, &, # and non-English letters are converted to percent codes – %20 for a space…📖How to Write SEO-Friendly URLs (Slugs) for Pages and Blog PostsThe slug is the part of the URL after the domain. A clean slug helps people and search engines understand the page…📖Should You Minify HTML and CSS? Speed Gains ExplainedMinifying removes spaces, line breaks and comments from code. It's a small, safe win – though not always as big as people…📖YAML vs JSON: Differences and When to Use EachYAML and JSON describe the same kind of data. JSON is strict and great for machines; YAML is readable and popular for…📖How to Format SQL Queries So They're Easy to ReadA one-line SQL query works, but debugging it is painful. Consistent formatting makes joins, filters and mistakes easy to spot.📖How to Name Your Business: 7 Checks Before You CommitA good name is easy to say, spell and remember – and actually available. Run these checks before printing business cards.📖How to Convert Text to Binary (and Read Binary Messages)Computers store every letter as a number, and every number as binary. Converting text to binary just writes those numbers out in…📖How to Create a robots.txt File (Without Hiding Your Site by Mistake)robots.txt is a small text file with outsized consequences: one wrong line can remove a whole site from Google. Here is what…📖How to Write Meta Titles and Descriptions That Get ClickedYour title and description are your advert in Google. Ranking third with a compelling snippet often beats ranking second with a dull…📖Local Business Schema: What to Add and How to Add ItSchema markup is a short block of code that tells Google facts about your business in a format it can't misread.📖How to Redirect a URL with .htaccess (301, HTTPS and www)A redirect sends visitors and search engines from an old address to a new one. On Apache and LiteSpeed hosting, the .htaccess…📖What Is a UUID? Versions, Format and When to Use OneA UUID is an identifier you can create anywhere, without asking a central server, and still trust to be unique.📖HEX, RGB, HSL and CMYK: Which Colour Format to UseThe same colour can be written half a dozen ways. Each format suits a different job.📖How to Make a CSS Gradient BackgroundGradients add depth to buttons, hero sections and cards with a single line of CSS and no image to download.📖HTML Entities Explained: When and How to Escape CharactersSome characters mean something special in HTML. To show them as plain text, you write them as entities.📖How to Create a WhatsApp Click-to-Chat Link for Your BusinessEvery extra step between a customer and a conversation loses enquiries. A WhatsApp link removes them all.📖How to Share Your Wi-Fi with a QR CodeReading out a long password letter by letter is a small daily annoyance. A QR code ends it.