Why does Mojeek Give Me a HTTP 403?

In certain cases, searching on Mojeek can result in a HTTP 403 “Forbidden” message.

Operator with Double Quotes

One way to generate a 403 is to use double quotes with a Mojeek search operator:

intitle:"javascript switch" site:w3schools.com

That will produce the URL:


If all you have is the URL, you can decode that with urldecoder.org

Spaces in the original search are replaced with + in the URL.


One way to execute this search without error is to use an operator for each term:

# Query
intitle:javascript intitle:switch site:w3schools.com


# Decoded URL

That gives W3Schools as its first result:

# Result
JavaScript Switch Statement
... JS Arrays JS Array Methods JS Array Sort JS Array Iteration JS Array

Lone Operator

However, be careful not to use an operator by itself.

# Query


# Decoded URL

# Result
403 - Forbidden

Most operators will give a 403 when used alone.

site: will give no result.

Lone Operator Table

Operator    | Result
inanchor:     HTTP 403
intext:       HTTP 403
intitle:      HTTP 403
inurl:        HTTP 403

allinanchor:  HTTP 403
allintext:    HTTP 403
allintitle:   HTTP 403
allinurl:     HTTP 403

since:        HTTP 403
before:       HTTP 403

site:         No result.

Vivaldi Search

Currently, Vivaldi has some quirks with respect to Mojeek.

There are four ways to invoke a search in Vivaldi:

One way that Vivaldi differs from Mojeek.com is that Vivaldi will encode spaces as %20 instead of +

For simple searches, %20 works:

upside-down house near Johannesburg


https://www.mojeek.com/search?q=upside-down house near Johannesburg

South Africa's 'upside down' house attracts tourists
HARTEBEESTPOORT, South Africa — With its roof on the ground and its floor 

Vivaldi with Double Quotes

However, including double quotes in the search will produce a 403:

"upside-down house" near Johannesburg


https://www.mojeek.com/search?q="upside-down house" near Johannesburg

403 - Forbidden

Vivaldi with Search Operators

And using a search operator will also give a 403.

double quote site:en.wikipedia.org


https://www.mojeek.com/search?q=double quote site:en.wikipedia.org

403 - Forbidden

If you find any other examples which give a HTTP 403. Please reply here or start a new post.


HTTP 403 | Wikipedia

Search Operators | Mojeek

URL Decoder

Quick Commands Video | Vivaldi

Quick Commands Help | Vivaldi

Upside-down House | BBC News


I’ve had this 403 thing happen too. It was from the address bar in Vivaldi: a three word search. I think my query string was “buy linux laptop” at the time.

The bulk of, if not all of, these will be automated query blocks i.e. stuff that’s been put into place in order to try and avoid letting through searches being undertaken by bots, where it is falling down is very useful though so I’m going to get all of these checked out.

EDIT: I also forgot to speak about that the thing which you pointed out @mike:

Vivaldi will encode spaces as %20 instead of +

is an issue that has been raised with them in the past which causes problems when it comes to Vivaldi+Mojeek and I believe they’re reasonably unique in that respect, this causes us an issue with the aforementioned blocks. It’s something that we’ve talked about revisiting a decent amount in order to see if we can improve here too.

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Regarding Vivalidi, please note @mike and @brad that we have raised the encoding issue with them more than once, and directly with their management team, as you can see here: Only browser which handles spaces in search queries differently | Vivaldi Forum
Feel free to add something to the Vivaldi forum!

Vivaldi has a feature request section where I’ve just posted. Interested parties can visit while logged into vivaldi.net and click on the thumbs up button to ‘vote’ for the request.


Many thanks @mike, very much appreciated. There are some replies to which I’ve responded and with more details of our perspective.

Mojeek will also take you to a 403 - Forbidden page if your search contains Hiragana or Katakana:


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Thanks for the feedback @gnome. I’ll pass it on to the search team. We don’t index Japanese (yet) so this is the likely explanation here.

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This is no longer a 403, but no Japanese indexed so no results.


Searching Mojeek support for information about conversions gave a 403. I am using the default algorithm.

# Query
conversion site:mojeek.com inurl:support


# Decoded URL

# Result
403 - Forbidden

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Hey @mike, thanks for pointing this one out; the 403 itself is now fixed but it’s given us another issue to fix with inurl. Here the results that don’t have the word in the URL aren’t being gotten rid of but demoted, it’s something we’re going to get fixed by no timescales on it yet.

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