DEMARCA / Design studio, est. 2020The tools collection · 52 free tools
Good work starts with better tools.
Free tools for brands, websites and social media, designed and built by DEMARCA, an independent design and marketing studio in Portugal. Most run entirely in your browser, so your files never leave your device.
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01Website Cost CalculatorWhat a website or a logo costs from a US, UK or EU agency, line by line, with every published source listed.Typical US agency, one-off build$3,000 to $30,000UK agency£3,000 to £8,000EU agency€2,500 to €8,000Published ranges: WebFX (May 2026), CloudSwitched (April 2026), Sellwerk. The calculator itemises every line for your own scope.Open the tool02Website GraderScore any page out of 100 on indexing, redirects, links, titles and share tags, with the fixes in priority order.IndexingRedirectsBroken linksTitlesShare tagsExample reportOpen the tool03ROAS CalculatorReturn on ad spend, profit and ROI from your numbers, plus the break-even and target ROAS your margin allows.4.40×Return on ad spendExample figuresOpen the tool
The collection
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52 tools
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Color and brand
Color Palette GeneratorPalettes from a color or a photoFavicon GeneratorICO, PNG and manifest in one zipBrand Guidelines TemplateA brand guide PDF in minutesColor Picker from ImageHex code and name of any pixelColor Names and Codes148 CSS color names plus 4,362 open-dataset namesRAL Colour ChartAll 216 RAL Classic colours with hexLogo Mockup GeneratorYour logo on 9 realistic scenesPaper SizesLetter, Legal, A4 and A3 in any unitDPI CalculatorPixels, inches and print sizePNG to ICO ConverterA real multi-size favicon.icoSVG to PNG ConverterSharp PNGs at 1x, 2x, 4x or any widthPNG to SVG ConverterTrace a logo or icon into vector pathsHEX to RGB ConverterHEX, RGB, HSL and CMYK, both waysHEX to PantoneNearest Pantone coated colors, approximate
Your siteSEO and websites
Website Cost CalculatorWhat a website really costs in 2026Broken Link CheckerFind dead links on any pageURL Redirect CheckerEvery hop, status and delayRobots.txt CheckerTest any URL against the rulesMeta Tag CheckerTitle, description and share previewsSchema GeneratorJSON-LD structured data, checked liveWebsite GraderOne score, every check explainedImage Optimizer and WebP ConverterCompress, resize and convert to WebPSchema ValidatorCheck JSON-LD against Google's propertiesWebP to PNG ConverterWebP to PNG or JPG, in your browserWebP to JPG ConverterWebP to JPG with a quality sliderPNG to JPG ConverterSmaller photos, transparency filledJPG to PNG ConverterLossless PNG from a JPGHEIC to JPG ConverteriPhone photos to JPG, in your browserDNS CheckerRecords and propagation on 6 resolversSSL CheckerCertificate, expiry, HTTPS and HSTS
Social media
Instagram Grid MakerSplit one image into a gridEngagement Rate CalculatorInstagram engagement, with benchmarksSocial Media Image SizesEvery size, plus a cropperUTM BuilderCampaign links that GA4 sorts rightROAS CalculatorReturn on ad spend, break-even and targetWhatsApp Link Generatorwa.me link, QR code and chat button
Text and email
Email Signature GeneratorHTML signatures for Gmail and OutlookLorem Ipsum GeneratorPlaceholder text, plain or HTMLTitle Case ConverterAP, Chicago, APA and sentence caseReadability CheckerFlesch reading ease and grade level
Quick text utilities
Bold Text GeneratorBold and fancy text for LinkedInCopy and Paste SymbolsHearts, stars, arrows, ticks and moreEmoji Copy and PasteEvery emoji with its official nameCursive Font GeneratorCursive text and alphabet to copyInstagram Fonts GeneratorFancy fonts for your bio and captionsSmall Text GeneratorTiny text: small caps, superscript, subscriptTattoo Font GeneratorPreview tattoo lettering in 24 real fontsGothic / Old English Font GeneratorGothic and blackletter text to copyAccessibility
Selected work
The studio behind the tools
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Let's make something matter.
Brand identity, websites, SEO and accessibility for clients across Europe, the UK and the US. Independent design and marketing studio in Portugal. Senior-led projects, transparent pricing and clearly defined deliverables for international clients.
- A reply from a designer within one working day
- A fixed-price proposal before any work starts
- Senior-led work with clearly defined deliverables
- Clients in Portugal, across Europe and further afield