Launching tools.ago.cl: 15 web utilities, zero server

There is a pattern we repeat daily across projects: compress 30 photos for a landing, clean an SVG that came messy from Figma, sign a PDF contract without installing anything, generate a QR with a client logo, build a complete favicon set from an emoji or a logo. Every time we looked for a free web tool, we found the same: mandatory registration, watermark, aggressive freemium, or worse, uploading the file to an unknown server.

We decided to build the 15 we used most and publish them together on a dedicated subdomain: tools.ago.cl.

One firm principle: zero server

The 15 tools share one technical principle: all processing happens in your browser. No upload, no endpoint, no storage. That means three concrete things:

• Confidentiality. A PDF contract, an internal screenshot, an unreleased logo, never leaves your device. Useful for companies with strict policies or regulated sectors.
• Speed. Without network in the loop, your CPU sets the timing. Compressing 50 images to WebP with aGo Squeezer takes seconds, not minutes.
• Zero cost on our side. We do not run processing servers; that allows the tools to be free without tricks.

If a tool cannot run 100% in the browser, it does not enter. If it needs a server, DB or login, it stops being a free tool and becomes a service.

The 15 tools, by hub

Canvas Hub: design and visual assets (6 tools)

For producing or transforming graphic pieces for web, social media, indie branding.

• aGo Canvas (tools.ago.cl/canvas). Generates parametric SVG (blobs, waves, mesh gradients, patterns) and vectorizes PNG or JPG to SVG with potrace. In beta while vectorization tuning settles.
• aGo Carousels (tools.ago.cl/carousels). Design a single panoramic image and the tool splits it into numbered slides for Instagram or LinkedIn. Ready-to-upload ZIP.
• aGo Mockups (tools.ago.cl/mockups). Place your screenshot inside iPhone, Macbook, browser or tablet, over curated backgrounds in the aGo palette.
• aGo Stickers (tools.ago.cl/stickers). Round Y2K badges with native SVG textPath curved text, in 6 Google Fonts.
• aGo Palette (tools.ago.cl/palette). WCAG AAA accessible palettes from a base color, with OKLCH math and export to CSS variables or Tailwind config.
• aGo Patterns (tools.ago.cl/patterns). 8 tileable SVG patterns (dots, grid, technical blueprint, feTurbulence noise). Copy the CSS background-image directly.

Engine Hub: optimization (5 tools)

For reducing weight, cleaning files exported from Figma, generating favicon sets.

• aGo Squeezer (tools.ago.cl/squeezer). Compresses JPG and PNG to WebP or AVIF, batch, up to 80% smaller. OffscreenCanvas + native browser encoders.
• aGo SVG Purge (tools.ago.cl/svg-purge). Cleans SVG exported from Figma or Illustrator: metadata, orphan IDs, editor namespaces. Web port of SVGO.
• aGo CSS Gradient (tools.ago.cl/css-gradient). Visual editor for radial mesh gradients. Exports pure CSS animated with keyframes, no libraries.
• aGo Font Specimen (tools.ago.cl/font-specimen). Test Google Fonts pairings over 4 real layouts (quote, editorial, product card, hero). Copy-ready CSS.
• aGo Faviconic (tools.ago.cl/faviconic). Complete favicon set from image or emoji: ico, apple-touch, android-chrome 192 and 512, webmanifest. ZIP ready for /public.

Office Hub: documents (4 tools)

For everyday paperwork without installing software.

• aGo Signer (tools.ago.cl/signer). Sign PDF contracts drawing with cursor or trackpad. pdf-lib embeds the signature without altering the document. Zero upload.
• aGo PDF Merge (tools.ago.cl/pdf-merge). Merge, split by range and rotate PDF pages. Useful for scans upside down or combined attachments.
• aGo QR Studio (tools.ago.cl/qr). Aesthetic QR codes with central logo, linear or radial gradient, custom corners. Export scalable SVG or PNG up to 1024 px.
• aGo Cotizador (tools.ago.cl/invoice). Quotes, budgets, proposals as PDF. History stored in localStorage. Does not generate Chilean SII tax invoices (DTE); that requires the SII portal or an authorized provider.

When does a free client tool beat a paid SaaS?

Not always. SaaS wins in some cases; client tools are the right answer in others.

Need	Client tool works	Better with SaaS or service
Occasional image compression	Yes (aGo Squeezer)	No
Automated compression pipeline for a 5,000 product catalog	No	Yes (Cloudinary, ImageKit)
Sign a simple contract between two parties	Yes (aGo Signer)	No
Advanced electronic signature with e-token and strict legal validity in Chile	No	Yes (FirmaPro, OpenIO)
Generate one QR with logo for a campaign	Yes (aGo QR Studio)	No
Scan tracking by channel, A/B testing of destination	No	Yes (Linki, Bitly)
Quote for a specific client	Yes (aGo Cotizador)	No
Tax invoicing with Chile SII	No	Yes (SII portal or authorized provider)

The line is simple: if the task is one-off or does not require shared persistence, a client tool works. If it is repeated, automated or requires legal effect or tracking, you move to a service.

How it is maintained

tools.ago.cl is an Astro 5 + React 19 site separate from the main ago.cl repository. Each tool is an isolated React island with its own dependencies. The build generates static files served from Cloudflare Pages, with zero hosting cost.

When a tool has real traction, we add features requested by users (GitHub issue or email). When a tool is not used, we leave it as is; we maintain it but do not promote it. That is a conscious choice to avoid catalog bloat.

What is next

Three extensions are planned, no firm date:

• aGo Diff. Visual diff of two images (pixel and region) for visual QA.
• aGo OG Generator. Typographic templates to generate OG images for any slug and push to CDN.
• aGo TOC. Table of contents generator from pasted Markdown or HTML.

If you use any of the current 15 and want a specific feature, open an issue at github.com/sixtovaldese or write to [email protected].

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Open the full catalog at tools.ago.cl or from the Tools hub on ago.cl, where we also list the WordPress plugins and Chrome extensions.