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Straight answers to the questions people actually ask, each with the free, no-signup tool that does the job in your browser.

PDF

How can I compress a PDF for free without uploading it?Use a browser-based PDF compressor that shrinks the file entirely on your own device, so the document is never sent to a server. It is free, needs no account, a How do I split a PDF into separate pages for free?Use a browser-based PDF splitter that pulls the page range you want out of the file and saves it as a new PDF, entirely on your own device. It is free, needs no

Images

How do I reduce a photo's file size so I can email it?Run the photo through a free browser-based image compressor, which re-encodes it at a quality you choose and shows you the size saving before you download. If t How do I crop a photo into a circle for a profile picture?Use a free browser-based circle crop tool that cuts the photo into a perfect circle with a transparent background and saves it as a PNG. The cropping happens on How do I rotate a photo that saved sideways?Rotate the image in 90 degree steps until it is upright and save the result, which writes the corrected orientation into the pixels themselves. Photos often dis How do I blur or pixelate a screenshot before sharing it?Hide detail by pixelating or blurring the image, or remove sensitive areas entirely by cropping them out, then share the edited copy. Browser-based blur and pix

Generators

How can I make a QR code for my wifi password?Encode your network details in the standard wifi string format, WIFI:T:WPA;S:YourNetworkName;P:YourPassword;;, and turn that text into a QR code. Phone cameras How do I make a favicon for my website without a design tool?A favicon today is a small set of PNGs, typically 16, 32 and 180 pixels square, linked from your HTML head. The fastest free route is an emoji favicon: a browse

Developer

How do I decode a JWT token safely?Decode a JWT with a browser-based decoder that parses the token on your own device, so the token and its claims are never sent to a server. It shows the header How do I figure out what a cron expression means?Paste the expression into a browser-based cron parser and it translates the five fields into plain English, like "0 3 * * 1" meaning 3:00 AM every Monday, along How do I convert a .env file to JSON?Paste the contents of your .env file into a browser-based converter and it turns each KEY=value line into a JSON object property. The conversion runs on your de How do I calculate a chmod permission value?Use a browser-based chmod calculator: tick the read, write and execute boxes for owner, group and others and it gives you the octal value like 755, along with t How do I build a crontab schedule expression?Use a browser-based cron builder to pick the minute, hour, day, month and weekday from dropdowns and get a valid crontab expression with a plain-English preview How do I generate fake user data for testing?Use generated dummy profiles instead of real customer records whenever you seed a database, fill a form or build a demo. A browser-based fake data generator cre Where do I get test credit card numbers for testing a checkout form?Use numbers that pass the Luhn checksum but are not real cards. Card forms validate the number format with the Luhn algorithm, a checksum over the digits, so a How do I escape a string so I can put it inside JSON?Backslash-escape the characters JSON reserves: double quotes become \", backslashes become \\, and literal newlines must become \n, since raw line breaks are no How do I pull one value out of a deeply nested JSON object?Address the value with a path expression that walks the structure key by key, like user.profile.tags[0], where dots step into objects and brackets index arrays.How do I generate Go structs from a JSON sample?Paste a sample of the JSON and generate matching Go struct definitions: exported field names, inferred types, nested structs for nested objects, slices for arra

Converters

How many cups is 500 grams of flour?All-purpose flour weighs about 120 to 125 grams per US cup when spooned into the cup and leveled, so 500 grams is right around 4 cups. The conversion is ingredi

Data

How do I turn a CSV file into SQL INSERT statements?Map the CSV header row to a column list and each data row to a VALUES tuple, quoting text values safely, which yields ready-to-run INSERT statements. A browser-

Calculators

What is the easiest way to split expenses fairly on a group trip?Total everything the group spent, divide by the number of people to get each fair share, then compare that share with what each person actually paid. Whoever pa

Text

How do I remove duplicate lines from a list of text?Paste the list into a browser-based tool that strips out repeated lines and leaves one copy of each, all on your own device. It is free with no sign-up, and bec How do I sort lines of text alphabetically?Paste the lines into a browser-based line sorter and it orders them alphabetically, A to Z or Z to A, on your own device. It is free, needs no account, and beca How do I remove extra spaces from text?Paste the text into a browser-based tool that collapses repeated spaces into one and trims the leading and trailing whitespace. It runs on your own device, is f How do I extract email addresses from a block of text?Paste the text into a browser-based email extractor and it pulls out every email address it finds into a clean list. It runs entirely on your own device, so the How do I remove line breaks from text I copied out of a PDF or email?Paste the text into a line break remover, which joins the broken lines back into flowing paragraphs on your own device and lets you choose whether to keep blank

SEO

How do I check if my SEO title tag is the right length?Use a free title tag length checker that counts your page title and shows whether it fits before search results truncate it. Paste the title and it flags if it How do I preview how my page will look in Google search results?Use a free SERP snippet preview that shows how your title, URL and meta description will appear in search results as you edit them in the browser. It helps you How do I keep a page out of Google search results with a noindex tag?Add a meta robots tag with the noindex directive to the page head, and make sure crawlers can still reach the page, because the tag only works if it can be read

Network

How do I find the subnet mask for a CIDR prefix?Enter an IP with the CIDR prefix into a browser-based subnet calculator and it returns the matching dotted-decimal subnet mask, such as 255.255.255.0 for a /24.How do I find the correct MIME content-type for a file extension?Search a browser-based MIME types reference by file extension to get the correct content-type value, such as application/json for .json or image/png for .png. I How do I check if two IP addresses are in the same subnet?Run each IP with the shared CIDR prefix through a browser-based subnet calculator and compare the network address it returns; if both give the same network addr

Security

How do I generate a time-ordered UUID v7 for database keys?Use a browser-based UUID v7 generator to create sortable, time-ordered version-7 UUIDs that work well as database primary keys. They are generated on your devic How do I Base64-encode credentials for a Basic Auth header?Join the username and password with a colon as user:pass, then Base64-encode that string with a browser-based encoder to build the value for an HTTP Basic Auth How do I create an HMAC signature for a webhook payload?Paste the payload and your shared secret into a browser-based HMAC generator and pick a hash like SHA-256 to compute the keyed signature. It uses the Web Crypto How do I check when a JWT expires?Decode the token with a browser-based JWT decoder and read the exp claim in the payload, which holds the expiry as a Unix timestamp. The decoding runs entirely How do I create a signed HS256 JWT for testing?Use a browser-based JWT generator to build a token from your payload and sign it with a secret using HS256. The signing runs on your device with the Web Crypto How do I convert an Ethereum address to its checksummed format?Apply EIP-55 checksumming: the letters in the hex address are set to upper or lower case according to a hash of the address itself, producing the familiar mixed

Date and time

How do I add or subtract days from a date?Use a browser-based date calculator: enter a starting date and a number of days, weeks, months or years, and it gives you the resulting future or past date alon

Education

How do I figure out what score I need on my final exam to get the grade I want?Use the formula: needed score = (target grade minus current grade x (1 minus final weight)) divided by final weight, with the weight as a decimal. For example,

Launch

Is a Product Hunt link dofollow?Not as a plain followed link. When we could last read it, on 31 July 2026, the website link on a Product Hunt product page carried rel="noreferrer noopener ugc"Do startup launch directories give dofollow backlinks?Some do, and many attach conditions. On 10 October 2026 we read the live listing markup on 23 launch and directory sites: 13 served a plain followed link, 9 use How do I check if a backlink is dofollow or nofollow?Open the page that links to you, find the link that points to your domain, and read its rel attribute: no rel value (or one without nofollow, ugc or sponsored) Why is my link preview not showing on LinkedIn, X or Slack?Almost always because of the Open Graph tags in your page head: there is no og:image, the image URL is relative instead of a full https address, the tags are on What size should an og:image be?Use 1200 x 630 pixels, a 1.91 to 1 ratio, which is the size Facebook recommends for sharp previews and which crops well on LinkedIn, X and Slack. Serve it from What should I check on my website before launch day?Check 14 basics: HTTPS, a clear title under about 60 characters, a meta description, one H1, no noindex, a canonical tag, structured data, a lang attribute, an How do I check if a domain name is available?Look the name up in the registry for each ending you want. A domain availability checker does this in one go: it asks the registries through RDAP, the service t How do I know if ChatGPT and other AI assistants can see my website?Check three things: your robots.txt must not block the AI search crawlers (OAI-SearchBot for ChatGPT search, PerplexityBot, Claude-SearchBot, plus Googlebot and How many characters can a Product Hunt tagline be?A Product Hunt tagline can be up to 60 characters, including spaces. Use them to say what the product does and who it is for in plain words, skip the trailing p What time does Product Hunt reset each day?Product Hunt days start at 12:01 AM Pacific Time and run for 24 hours, so launching right at the start gives your product the whole day on the homepage. Pacific Do I need a privacy policy for my website or app?If you collect any personal data, even just email addresses, analytics or payment details, you should have one: many privacy laws require it, and app stores, pa What should I write in my Product Hunt maker comment?Introduce yourself, say in one line what the product does and who it is for, explain why you built it, list two or three key features, mention any launch offer,How do I calculate Net Promoter Score (NPS)?Ask "How likely are you to recommend us?" on a 0 to 10 scale. Count promoters (9 or 10), passives (7 or 8) and detractors (0 to 6). NPS is the percentage of pro How do I calculate TAM, SAM and SOM for my startup?Bottom-up: TAM is the number of potential customers times what each pays per year; SAM is the share of that market your product and channels can actually serve;Is a AlternativeTo backlink dofollow?No. On the live AlternativeTo listing we checked on 10 October 2026 the link to the product carried rel="nofollow", so search engines treat it as a hint rather Is a BetaList backlink dofollow?Yes, on the live BetaList listing we checked on 10 October 2026 the link to the product was a plain followed (dofollow) link. Their FAQ claims a do-follow link,Is a Dang.ai backlink dofollow?Yes, on the live Dang.ai listing we checked on 10 October 2026 the link to the product was a plain followed (dofollow) link. On the tool page we opened (Artly A Is a DevHunt backlink dofollow?No. On the live DevHunt listing we checked on 10 October 2026 the link to the product carried rel="nofollow", so search engines treat it as a hint rather than a Is a Fazier backlink dofollow?Yes, on the live Fazier listing we checked on 10 October 2026 the link to the product was a plain followed (dofollow) link. On the two launch pages we opened (b Is a Indie Hackers backlink dofollow?No. On the live Indie Hackers listing we checked on 10 October 2026 the link to the product carried rel="nofollow", so search engines treat it as a hint rather Is a Launch Llama backlink dofollow?No. On the live Launch Llama listing we checked on 10 October 2026 the link to the product carried rel="nofollow", so search engines treat it as a hint rather t Is a Launching Next backlink dofollow?Yes, on the live Launching Next listing we checked on 10 October 2026 the link to the product was a plain followed (dofollow) link. On the listing we opened, th Is a Microlaunch backlink dofollow?Yes, on the live Microlaunch listing we checked on 10 October 2026 the link to the product was a plain followed (dofollow) link. On both product pages we opened Is a Open Launch backlink dofollow?No. On the live Open Launch listing we checked on 10 October 2026 the link to the product carried rel="nofollow", so search engines treat it as a hint rather th Is a OpenHunts backlink dofollow?No. On the live OpenHunts listing we checked on 10 October 2026 the link to the product carried rel="nofollow", so search engines treat it as a hint rather than Is a Peerlist Launchpad backlink dofollow?We could not tell: the Peerlist Launchpad listing we opened builds its links with JavaScript, so the link was not in the HTML we could read on 10 October 2026. Is a PeerPush backlink dofollow?Yes, on the live PeerPush listing we checked on 10 October 2026 the link to the product was a plain followed (dofollow) link. On the listing we opened, the "Vis Is a SaaSHub backlink dofollow?No. On the live SaaSHub listing we checked on 10 October 2026 the link to the product carried rel="nofollow", so search engines treat it as a hint rather than a Is a Show HN (Hacker News) backlink dofollow?No. On the live Show HN (Hacker News) listing we checked on 10 October 2026 the link to the product carried rel="nofollow", so search engines treat it as a hint Is a Startup Fame backlink dofollow?Yes, on the live Startup Fame listing we checked on 10 October 2026 the link to the product was a plain followed (dofollow) link. On a free Verified listing we Is a Startup Stash backlink dofollow?Yes, on the live Startup Stash listing we checked on 10 October 2026 the link to the product was a plain followed (dofollow) link. On both listings we opened, t Is a There's An AI For That backlink dofollow?Yes, on the live There's An AI For That listing we checked on 10 October 2026 the link to the product was a plain followed (dofollow) link. On both tool pages w Is a Tiny Startups backlink dofollow?No. On the live Tiny Startups listing we checked on 10 October 2026 the link to the product carried rel="nofollow", so search engines treat it as a hint rather Is a TinyLaunch backlink dofollow?Yes, on the live TinyLaunch listing we checked on 10 October 2026 the link to the product was a plain followed (dofollow) link. The free tier promises a backlin Is a Toolify backlink dofollow?Yes, on the live Toolify listing we checked on 10 October 2026 the link to the product was a plain followed (dofollow) link. On the listing we opened, the produ Is a Twelve Tools backlink dofollow?Yes, on the live Twelve Tools listing we checked on 10 October 2026 the link to the product was a plain followed (dofollow) link. On the listing we opened (Seli Is a Uneed backlink dofollow?Yes, on the live Uneed listing we checked on 10 October 2026 the link to the product was a plain followed (dofollow) link. On the listing we opened (which had 4 Is a yourhack.ai backlink dofollow?Not by default. A yourhack.ai listing link is nofollow until the maker links back to yourhack.ai or pays for a launch option; then it becomes a followed link. Y