All 118 free social, SEO & image tools
Creators, marketers, and small businesses use these every day. Most run entirely in your browser with no signup. The 118 documented tools come first: their pages carry full instructions, platform limits, and worked examples.
Browsing all tools, grouped by job. Documented tools come first.
Featured tools (118)
The tools we maintain most closely - each has full instructions, platform limits, and worked examples.
Hashtag GeneratorGenerate viral hashtags for Instagram, TikTok & Twitter with AIAI Caption GeneratorWrite engaging captions for any social post instantly with AIBio GeneratorCreate a perfect social media bio in secondsImage ResizerResize images to perfect dimensions for every social platformFont GeneratorGenerate cool fonts and text styles for bios and captionsQR Code GeneratorCreate custom QR codes for your social profiles and linksEmoji PickerFind and copy the perfect emoji for your postsEngagement CalculatorCalculate your true engagement rate and benchmark performanceThread SplitterSplit long posts into Twitter/X threads under 280 charactersLine Break GeneratorAdd invisible line breaks to Instagram captionsUsername GeneratorGenerate creative social media username ideasUTM Link BuilderAdd campaign tracking parameters to any URLAspect Ratio CalculatorCalculate image ratios and social media dimensionsMeta Tag GeneratorGenerate SEO title, description, and Open Graph tagsKeyword Density CheckerAnalyze keyword frequency and avoid stuffingURL Slug GeneratorCreate SEO-friendly URL slugs from any headlineWord CounterCount words, characters, and reading timeReadability CheckerScore content with Flesch Reading EaseRobots.txt GeneratorBuild robots.txt for search engine crawlersSchema Markup GeneratorCreate JSON-LD for 20+ schema types - FAQ, Product, HowTo & moreSchema ValidatorValidate JSON-LD schema markup and check required fieldsHeading AnalyzerAudit H1 - H6 heading structure in HTMLColor Contrast CheckerTest WCAG color contrast for accessibilityHTML to TextStrip HTML tags and extract plain textCase ConverterConvert text to uppercase, title case, snake_case & moreLorem Ipsum GeneratorGenerate placeholder text for designs and mockupsTimestamp ConverterConvert Unix timestamps to dates and backJSON FormatterFormat, validate, and beautify JSON dataInstagram Bio PreviewPreview Instagram bio line breaks before postingFancy Text GeneratorGenerate Unicode fancy fonts and symbol stylesSlogan GeneratorCreate taglines from templates - no AI requiredBanned Hashtag CheckerCheck hashtags against a static banned listHashtag Limit CheckerCount hashtags against per-platform limitsBest Time to PostStatic best posting windows by platform and dayInstagram Grid PlannerPlan a 9-photo Instagram grid layout locallyStory Highlight Cover MakerCrop circular Instagram highlight covers on canvasTikTok Video Length CheckerCheck video duration against TikTok length limitsYouTube Title CheckerCheck YouTube title and description character limitsYouTube Tag GeneratorBuild YouTube tags from keyword combinationsImage CropperCrop images with social platform aspect presetsImage CompressorCompress images in-browser before uploadingImage Format ConverterConvert images between PNG, JPG, and WebPImage to Base64Convert images to Base64 data URIs locallyCollage MakerCombine photos into a simple collage on canvasWatermark AdderAdd text watermarks to images in your browserBackground Color RemoverRemove solid background colors from imagesMeme GeneratorAdd top and bottom meme text on canvasProfile Picture CropperCrop circular profile pictures for social biosColor Palette ExtractorExtract dominant colors from any imageFavicon GeneratorGenerate favicon sizes from an uploaded imageImage Dimension CheckerCheck image width, height, and file size locallyGIF Frame ViewerInspect GIF dimensions and preview framesOpen Graph PreviewerPreview Facebook/LinkedIn Open Graph cardsTwitter Card PreviewerPreview X/Twitter card layouts from meta fieldsSitemap GeneratorGenerate sitemap.xml from a list of URLsCanonical Tag GeneratorGenerate rel=canonical link tags for SEOMeta Title Pixel CheckerSimulate Google SERP title pixel widthBroken Link Syntax CheckerFind malformed URLs with regex - no crawlingAlt Text Template GeneratorBulk alt text templates for image SEORedirect Rule GeneratorGenerate .htaccess and nginx redirect rulesCSV ↔ JSON ConverterConvert CSV to JSON and JSON to CSV locallyMarkdown PreviewerPreview Markdown as HTML in your browserColor Palette GeneratorConvert HEX/RGB/HSL and build color palettesPassword GeneratorGenerate strong passwords and random stringsGA4 Event BuilderBuild and validate Google Analytics 4 event snippetsUTM Parameter DebuggerValidate, explain, and fix UTM parameters in URLsCookie Expiration CalculatorCalculate analytics cookie expiry dates and TTLConversion Rate CalculatorCalculate funnel conversion rates and benchmarksCPC CalculatorAnalyze cost per click, CPM, and ad efficiencyROAS CalculatorMeasure return on ad spend and campaign profitLTV CalculatorCalculate customer lifetime value and LTV:CACContent Calendar PlannerPlan monthly social content with local save/exportPosting Frequency CalculatorGet recommended posts per week by platformTimezone Audience ConverterFind overlapping posting hours for global audiencesDay-of-Week Performance GuideSee best posting days and hours by platformTeam Collaboration SheetGenerate CSV content workflows for teamsWriting Goal TrackerTrack daily word goals, streaks, and progressHeadline Formula GeneratorGenerate headlines from proven copy formulasEmail Subject Line TesterTest subject lines for length, spam, and previewCTA Button Text GeneratorGenerate action-focused CTA button copyFollower Growth ProjectorProject follower growth over 3, 6, and 12 monthsRemove EXIFStrip location and camera metadata from photosImage Metadata ViewerInspect image dimensions and file metadataCharacter CounterCount characters, words, and lines instantlyText CleanerRemove odd spacing and invisible charactersUUID GeneratorGenerate UUID v4 identifiersHTML EncoderEncode special characters to HTML entitiesXML FormatterBeautify and validate XML documentsSEO AnalyzerAnalyze on-page SEO signals from pasted HTMLSERP PreviewPreview how your title and meta look in GoogleFAQ Schema GeneratorGenerate FAQPage JSON-LD schema markupOpen Graph GeneratorGenerate Open Graph meta tagsTwitter Card GeneratorGenerate Twitter Card meta tagsCPM CalculatorCalculate cost per thousand impressionsROI CalculatorCalculate marketing return on investmentFind And ReplaceFind and replace text instantly in your browserURL Encoder DecoderEncode or decode URL components safelyHashtag ExtractorExtract all hashtags from a caption or postMention ExtractorExtract @mentions from social captionsMeta Title Length CheckerCheck if your SEO title fits Google limitsPercentage CalculatorCalculate percentages, ratios, and differencesDiscount CalculatorCalculate sale prices and savingsMargin CalculatorCalculate profit margin and markupBreak Even CalculatorFind break-even units for your productYouTube Monetization CalculatorEstimate YouTube revenue from views and RPMPassword Strength CheckerScore password strength instantlyHex To RGBConvert HEX colors to RGB valuesPX to REM ConverterConvert pixels to rem/em for CSSText To Bullet ListTurn lines into a clean bullet listInstagram Caption FormatterClean spacing in Instagram captionsEtsy Fee CalculatorEtsy listing, transaction, processing and Offsite Ads fees plus profiteBay Fee CalculatoreBay final value fees by category, per-order fee and Promoted ListingsPoshmark Fee CalculatorWhat Poshmark keeps from a sale and what you earnDepop Fee CalculatorDepop processing and boost fees, payout and profitMercari Fee CalculatorMercari selling fees, payout and profit per itemAmazon FBA Fee CalculatorAmazon referral, plan and FBA fees with profit and ROIWhatnot Fee CalculatorWhatnot tiered commission and processing fees for live sellersShopify Fee CalculatorShopify plan cost and payment processing per order
Seller Fee Calculators
Etsy, eBay, Poshmark, Depop, Mercari, Amazon, Shopify and Whatnot fees, profit, and the price to list at. Fees verified against official pages.
Etsy Fee CalculatorEtsy listing, transaction, processing and Offsite Ads fees plus profiteBay Fee CalculatoreBay final value fees by category, per-order fee and Promoted ListingsPoshmark Fee CalculatorWhat Poshmark keeps from a sale and what you earnDepop Fee CalculatorDepop processing and boost fees, payout and profitMercari Fee CalculatorMercari selling fees, payout and profit per itemAmazon FBA Fee CalculatorAmazon referral, plan and FBA fees with profit and ROIWhatnot Fee CalculatorWhatnot tiered commission and processing fees for live sellersShopify Fee CalculatorShopify plan cost and payment processing per order
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