Direct Currency Converter
Converts prices from any currency (€, $, £, ¥, ؋, ৳, ฿, ៛, ₡, etc.) to prices in a selectable currency automatically while browsing.
# Direct Currency Converter - DCC
Version 3.4.2, date 2025-08-25
## Introduction
DCC finds and converts prices on any web page with currency quotes from external sources (ECB or Currencylayer).
If you hover the mouse over a converted price, the conversion quote and original value is
shown as a tooltip in the upper left corner of the window.
The tooltip can be switched off in the settings.
## Data protection
DCC does not collect any information about you.
The communication is directly between you, the page you are viewing,
and the currency data providers.
There are no ads or spyware.
## Settings
The currencies to be converted are shown in a list in priority order.
The currencies can be reordered using drag and drop.
For instance, if AUD is before USD and both are selected, "$100" will be converted from AUD.
Select All will select all currencies.
Select None will turn off all selections.
Convert to is the currency all other currencies will be converted to.
Any combination will work.
You can select how conversions are done and shown.
You can also force conversion of all numbers from one currency.
It's convenient when you use a page without currency units.
ECB is the default currency source, but rather limited.
You can use Currencylayer for free (or paid) if you sign up with them and get an API key.
DCC reloads quotes on demand only, so the query limitation of Currencylayer may not
be a problem.
You can exclude any URL from being converted. Regular Expressions are valid.
Reset settings will reset to default settings.
Reset quotes will reload the currency quotes.
## About
DCC was originally created in 2014 as a remake of the Firefox add-on Simple Currency Converter
(which was very different from the extension of the same name currently in addons.mozilla.org).
Later it was ported to work in SeaMonkey, Chrome, Opera, Safari and Edge browsers.
Since Mozilla abandoned its own API to use the Chrome API instead, the Chrome version became the master branch.
Since Microsoft decided to change Edge into a Chromium based application, DCC for Edge has been discontinued.
Originally the currency quotes were fetched from Yahoo!. They closed their API, that was never
meant to be used by outsiders, so DCC switched to the limited ECB quotes,
and Currencylayer to cover most currencies.
External libraries: DOM Purify, Drag Drop Touch.
## Changelog
### 3.4.2, 2025-08-25
Bug fix: Changed to non-persistent scripts to avoid timeouts in Firefox.
### 3.4.1, 2025-08-08
Firefox port from Chrome.
### 3.4.0, 2025-07-12
The Settings page now opens in its own tab.
New internal test page (instead of the old external page).
New context menu to open test page and curreny list page.
Updated currencies list: SLE, VED, XCG, ZWG added.
Improved handling of spaces and other features in found prices. In particular, improved handling of USD prices.
Internal changes:
Added webpack build configuration.
Added check so content scripts will be sent when needed only.
Improved messaging between background and content scripts.
Updated external dependencies
Using ESM modules where possible
Fixed failing unit tests
Removed old geolocation services.
### 3.3.0, 2024-09-07
Now conversion of prices is only done on a newly opened tab when you press the $€ icon.
It also means that there is no general On/Off state any more. Every tab has its own state.
Removed the menu from the icon.
Internal change: Using Chrome Manifest V3 which means many internal code changes.
### 3.2.1, 2020-01-25
Fix for identifiers that have already been declared.
### 3.2.0, 2019-10-29
Added setting for HTML elements that should be ignored.
Even if an element is ignored, its children will still be checked.
Also converts head elements, such as page title.
### 3.1.0, 2019-08-25
The options/settings screen now has all sections minimised when opened.
Internal changes:
Using HTML drag and drop instead of jQuery.
Removed external libraries jQuery, jQuery UI, jQuery UI Touch-Punch.
Updated the external library DOM Purify.
### 3.0.0
Added included domains (whitelist).
Internal rewrite to improve the functionality. No changes in the settings storage.
Bug: wrong currency was shown in the popup.
Bug: prices in the same element were converted repeatedly.
Bug: drag and drop on touchscreen did not work.
ISO 4217 amendments 166 to 169 included. Notably the latest Venezolan currency, VES, is added.
Updated the external libraries jQuery, jQuery UI, jQuery UI Touch-Punch, DOM Purify.
## Build
Download and install Node.js v22 (or any compatible version) with npm from https://nodejs.org
Run build-mozilla.sh (or execute the commands therein)
## Author
Per Johansson
Latest reviews
Just not working. Coverts any currecny to "Unknown" text
Just not working. Coverts any currecny to "Unknown" text
The extension settings and popup overlay really don't look very "professional", but I greatly appreciate the minimal page integration logic.. it has no unnecessary fluff and it "Just Works". :)
The extension settings and popup overlay really don't look very "professional", but I greatly appreciate the minimal page integration logic.. it has no unnecessary fluff and it "Just Works". :)
Can't select source currency, it just shows this message - (Drag and drop currencies to reorder them. If an ambiguous currency such as "kroner" (could be DKK or NOK) is found, it is converted to the first possible currency in the list.) - but there's no list! And it doesn't detect anything and doesn't convert anything, not even Amazon or eBay.
Can't select source currency, it just shows this message - (Drag and drop currencies to reorder them. If an ambiguous currency such as "kroner" (could be DKK or NOK) is found, it is converted to the first possible currency in the list.) - but there's no list! And it doesn't detect anything and doesn't convert anything, not even Amazon or eBay.
Very useful and convenient.
Very useful and convenient.
The 6th one I tried, others did not work.. this one does!
The 6th one I tried, others did not work.. this one does!
Would be beter with an option to not modify the page but convert in a tooltip
Would be beter with an option to not modify the page but convert in a tooltip
Rearranging source currencies doesn't work, it resets the order even though I clicked save. So it keeps misidentifying USD as AUD.
Rearranging source currencies doesn't work, it resets the order even though I clicked save. So it keeps misidentifying USD as AUD.
Works well for the very first days, then I need to reinstall and configure it again EVERY SINGLE TIME in a few days...
Works well for the very first days, then I need to reinstall and configure it again EVERY SINGLE TIME in a few days...
very useful. but it is very damned when it changes the <code> elements which often have $0 $1 $2 or other dollar sign text. it must have option to exclude elements.
very useful. but it is very damned when it changes the <code> elements which often have $0 $1 $2 or other dollar sign text. it must have option to exclude elements.
Doesn't work at all
Doesn't work at all
Настройки- чёрт ногу сломит! Ничего не понятно
Useless to me - just a list of exchange rates - not including the currency I need to convert - and does not make the conversion. Who needs it?
Useless to me - just a list of exchange rates - not including the currency I need to convert - and does not make the conversion. Who needs it?
The only one I have tried that works. It is very smooth and fast. Only issue is that it isn't the most aesthetically pleasing extension, but that's not much of an issue.
The only one I have tried that works. It is very smooth and fast. Only issue is that it isn't the most aesthetically pleasing extension, but that's not much of an issue.
Seems to be converting currencies in CAD to CAD at a higher rate???
Seems to be converting currencies in CAD to CAD at a higher rate???
Иногда конвертирует так: более 113 258 RUB (1 37 753 RUB (500 евро)) начинается от 37 753 RUB (##__##) Оригинал: более 1500 евро начинается от 500 евро https://visasam.ru/emigration/rabota/srednya-zarplata-v-chehii.html
Works well. If can update the UI, it would be better. Current UI seems like stuck in the 90's.
Works well. If can update the UI, it would be better. Current UI seems like stuck in the 90's.
Excellent application. Working great!
Excellent application. Working great!
Very useful! But I'd suggest adding an option to disable the conversion inside text boxes, so that they don't get replaced while you're typing.
Very useful! But I'd suggest adding an option to disable the conversion inside text boxes, so that they don't get replaced while you're typing.
great! works very well
great! works very well
This is the only converter working now!
This is the only converter working now!
Hi, your plugin essential to me, however I have notice it stopped change currency for me. even when am going for option page not displayed properly, I cannot scroll ...
Hi, your plugin essential to me, however I have notice it stopped change currency for me. even when am going for option page not displayed properly, I cannot scroll ...
Tried about 5 different extensions and this one works flawlessly!
Tried about 5 different extensions and this one works flawlessly!
The extension no longer works correctly for Zambian Kwacha ZMW
The extension no longer works correctly for Zambian Kwacha ZMW
Currency Rates are 100% wrong against KWD
Currency Rates are 100% wrong against KWD
The best currency converter for browsers. Thanks Per! Keep up the good work!
The best currency converter for browsers. Thanks Per! Keep up the good work!
Back online again, thanks!
Back online again, thanks!
