UTM Builder Online — Free & Private
Add UTM tracking parameters to a URL for campaign analytics. Free, private, and processed entirely in your browser — no upload, no account, no file ever leaves your device.
How to use UTM Builder
Add UTM tracking parameters to a URL for campaign analytics. Everything runs in this tab — nothing is uploaded for the core job.
- Enter your content — Type or paste what you want to work with — UTM Builder runs immediately in your browser.
- Choose your options — Set any options UTM Builder offers.
- Get your result — Copy or download the result \u{2014} done entirely on your device, nothing uploaded.
Privacy proof for UTM Builder
This tool processes files in your browser. Open DevTools → Network while you run it: your document is not uploaded. After one online visit, many tools keep working with Airplane Mode on (libraries cached locally).
Popular tools
The highest-demand tools with full options — browse by category below for the rest.
Star any tool — it appears under Favorites on this device.
How this actually works
Each tool runs entirely with JavaScript already loaded in this page — PDF tools via pdf-lib and pdf.js, image tools via the browser's native Canvas API, and everything else with plain JavaScript. Your files or input are read into browser memory, processed, and handed back as a download or copyable result. This page itself is served by a small Laravel route; Laravel never sees your files either. The only backend in use is Supabase, and only for two optional things: signing in with a magic link, and — only if you're signed in — a log of which tool you ran and when. Honest limits worth knowing: Compress PDF flattens each page to a re-encoded image (great for scans, not ideal if you need selectable text after); HEIC conversion uses a small on-demand converter when the browser cannot decode HEIC natively (Safari often works without it); Fill PDF Form is best-effort for simple AcroForm fields, not a full Adobe Forms replacement; and Word/Excel/PowerPoint ⇄ PDF genuinely needs a server-side engine, so it isn't included — this build only ships tools that can honestly run client-side.
Questions people actually ask
What are UTM parameters?
Standard URL query parameters (utm_source, utm_medium, utm_campaign, and the optional utm_term/utm_content) that analytics tools like Google Analytics read to attribute a visit to a specific campaign, source, or channel.
Which fields are required?
Source, medium, and campaign are the three Google Analytics treats as required for meaningful attribution — term and content are optional, typically used for paid-search keyword or A/B-variant tracking.
Where do I see the campaign data once someone clicks the link?
In your analytics platform's own campaign/acquisition reports (e.g. Google Analytics) — this tool only builds the URL, it doesn't track or record any clicks itself.
Does this shorten the URL?
No — it appends readable tracking parameters to your full URL. Use a separate URL shortener afterward if you want a shorter link.
What happens if I put spaces in a value?
They're automatically URL-encoded (a space becomes %20), so the final link is always valid — you don't need to encode values yourself.
Do the values need to follow a specific format?
No fixed format is required, but staying consistent (e.g. always lowercase, always "cpc" not "CPC") makes your analytics reports much easier to filter and compare later.
Does it update live as I fill in the form?
Yes — the full tagged URL builds itself as you type, ready to copy.
Is my URL sent anywhere?
No — the tagged URL is built entirely in your browser; nothing is transmitted.
Is this really free, and is there a file size limit?
Yes — no account, no paywall. Since processing happens in your browser's memory rather than uploading anywhere, the practical limit is your device's available RAM, not a server quota. Very large files (500+ pages) may run slower, especially for Compress and PDF→JPG.
Does anything about my file get sent anywhere?
No. Every tool runs with pdf-lib/pdf.js loaded in this page; your file is read into browser memory and never leaves it. The only network call this app makes for your account is Supabase auth — and that only stores which tool you ran and when, never file content.
Why isn't Word/Excel/PowerPoint → PDF included?
Converting Office formats accurately needs a real rendering engine (what Word or LibreOffice use internally) — no browser library does this reliably. Rather than ship a broken version, it's left out.
Does TechDriven Tools have OCR (text recognition)?
Yes — OCR PDF recognizes text in scanned or photographed pages using Tesseract.js, running entirely on your device, and gives you a searchable PDF or a plain text file. Nothing is uploaded for this either.
Can I use this without an internet connection?
Once the page and its libraries have loaded once, yes — the tools themselves need no network access. Signing in and viewing history do require a connection, since those talk to Supabase.
What happens to the "history" if I sign in?
Only a row per tool run — the tool's name and a timestamp. No filename, no file content, ever. You can see the full list any time via the History button.
Are the non-PDF utilities (password generator, JSON formatter, etc.) private too?
Yes — same rule as the PDF tools. Word Counter, Case Converter, Password Generator, UUID Generator, Base64, Hash Generator, JSON Formatter and JWT Decoder all run with plain JavaScript already loaded in this page; nothing you type or paste is sent anywhere.
UTM Builder, in depth
Add UTM tracking parameters to a URL for campaign analytics — built correctly, encoded properly, every time.
Features
Standard UTM Parameters
Source, medium, campaign, term, and content.
Automatic Encoding
Spaces and special characters are encoded correctly, no manual escaping.
Live URL Preview
See the full tagged link update as you fill in the form.
Instant
No network call — the URL is built locally.
Why use UTM Builder
- Track which campaign drove a visit in Google Analytics or similar tools.
- Tag links consistently across a marketing campaign.
- Avoid manual encoding mistakes that break analytics tracking.
- Build a shareable link for a specific channel or source.
How it works
UTM parameters are standard URL query parameters (utm_source, utm_medium, utm_campaign, and the optional utm_term/utm_content) that analytics platforms read to attribute a visit to a specific campaign. This tool appends them to your URL using the browser's own URL API, which handles encoding automatically and correctly.
A tip for consistent tracking
Analytics reports are only as clean as the values you tag with — staying consistent (always lowercase, always the same term for the same channel, e.g. always "cpc" not sometimes "CPC") makes filtering and comparing campaigns in your analytics platform far easier down the line.
Why people search for UTM Builder
Add UTM tracking parameters to a URL for campaign analytics. Bookmark /utm-builder if UTM Builder is part of your weekly workflow; the URL is stable and the tool stays free.
UTM Builder sits in our SEO & Web Tools group. The page is built so you can finish the job without creating an account, installing a desktop pack, or sending the payload to an unknown converter API.
Who UTM Builder is for
- A desktop suite is overkill for a one-page or one-photo job.
- You want a second opinion after another converter produced a weird output.
- You need a result now and do not want another account wall.
- The file or text is sensitive enough that uploading feels wrong.
Recommended workflow
Generate the snippet or file locally → paste into your CMS or deploy repo → validate in Search Console or rich-result tests when it matters.
- Open UTM Builder (also available from category hubs and ⌘K).
- Use the labeled fields or dropzone — options match what UTM Builder actually does.
- Run the tool and wait for local progress to finish.
- Download or copy the result, then verify on the device where you will share it.
Tips that improve results
- Start with a non-sensitive sample so you learn the options before the real file.
- Change one setting at a time when you are comparing quality or layout.
- Keep the original until stakeholders accept the download.
- Rename the output with date + purpose before you attach it to email.
- On phones, plug in power for large PDFs, videos, or spreadsheets.
- Prefer UTF-8 text for developer converters; weird encodings cause most “broken” results.
Common mistakes with UTM Builder
- Expecting UTM Builder to replace a full desktop suite for every edge-case format.
- Skipping a sample check and discovering a bad export after the original was deleted.
- Chaining many lossy image/PDF steps when one careful pass would have been enough.
- Using a public computer without clearing downloads afterward.
Privacy model
Processing for UTM Builder is designed to stay in the browser. Laravel serves the page; it does not receive your file bytes for conversion. Optional Supabase auth only stores which tool you ran and when — never filenames or contents.
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FAQ — UTM Builder
Is UTM Builder free to use?
Yes. UTM Builder on TechDriven Tools is free — no account, no watermark, and no paywall for the core workflow.
Does UTM Builder upload my file or text?
No for processing. UTM Builder runs in your browser tab. Optional sign-in never stores file contents — only tool names and timestamps if you enable history.
When should I use UTM Builder?
Use UTM Builder for SEO & Web Tools jobs where privacy and speed matter: quick one-offs, sensitive inputs, or checking another app’s result without another upload site.
Will UTM Builder work on my phone?
Yes in a modern mobile browser. Large inputs can take longer because your device does the work locally.
What are the limits of UTM Builder?
There is no server quota from us. Limits are your device memory, battery, and formats the browser can decode. UTM Builder will not pretend to support server-only Office or cloud-AI pipelines.
How is UTM Builder different from upload-based sites?
Upload converters send your content to someone else’s server. UTM Builder keeps the transform on-device whenever the format allows, which is the safer default for confidential documents, photos, tokens, and configs.
Bottom line
If you need UTM Builder done quickly and privately, start at /utm-builder, run it once on a sample, then process the real input. That is how TechDriven Tools stays competitive: honest capabilities, labeled UI, and content that matches what the tool actually ships.
From our blog: How to Build UTM Tracking URLs