Free ToolConverter

URL Encoder / Decoder

Encodes special characters in URLs (spaces, ampersands, equals) and decodes encoded URLs back to readable form.

ModeInput

Result

Hello%20World%20%26%20friends

What it does

Wraps encodeURIComponent / decodeURIComponent. Useful for inspecting tracking URLs, building redirect URLs, or fixing broken email links.

When to use

Embedding query strings in email links. Debugging tracking-URL issues. Building UTM-tagged URLs by hand.

FAQ

Should I encode the whole URL or just parameter values?+

Just parameter values. Encoding the whole URL (including https://, ?, &) breaks the URL.

Keep going

Articles, glossary entries, and other tools on the same topic.

Plain Text Converter

Strips HTML tags, converts <a> to 'text (url)', converts <p> to double newline, converts <li> to '- '.

Outputs different divider styles (thin, thick, dashed, dotted) at configurable widths for use in plain-text email composition.

JSON/CSV Converter

JSON array of objects ↔ CSV with auto-detected columns.

Standard case-conversion algorithms with smart handling of short words (Title Case keeps 'a', 'an', 'the' lowercase).

Reference page with worked examples: a forwarded email, a marketing platform send, a bounce, and a phishing attempt — each annotated to show what's in From vs Return-Path and which checks pass.

Walks through a worked example: original send, forwarded through a list, received at Gmail.

Converter ran. Now track what happens after you hit send.

Most senders convert formatting and move on. Outsolvi tracks what the recipient actually does with that converted email — opens (confidence-scored, not fake), clicks, replies, forwards. From $7/user/mo yearly.

Track the next send

Other free tools

Open Rate Checker

Reply Rate Target

DMARC Generator

See all 100 tools

Nate SummersCo-Founder, Outsolvi

Nate built Outsolvi after watching every email-tracking tool he had ever used lie to him about opens. Outsolvi runs Tier 1 to 5 confidence scoring on every open, native in Outlook and Gmail, so the number on the dashboard is one a rep can actually act on.

Last reviewed May 25, 2026Editorially independent

We update these pages when the underlying mechanics change — new mailbox-provider rules, new tracker behavior, new measurement gaps. The dates above are real revisions, not auto-touches.

Articles Free tools Pricing