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v3.25.1

Note 1 - Corporate Information and Group Structure (Details Textual) | Dec. 31, 2024 $ / shares shares
--- | ---
Ordinary shares [member] |
Corporate Information and Group Structure [line items] |
Number of shares authorised (in shares) | 250,000,000
Number of shares outstanding (in shares) | 88,480,154
Par value per share (in dollars per share) | $ / shares | $ 0.0002
Top of range [member] |
Corporate Information and Group Structure [line items] |
Number of ordinary shares per share of ADS (in shares) | 2
Bottom of range [member] |
Corporate Information and Group Structure [line items] |
Number of ordinary shares per share of ADS (in shares) | 1

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- Definition The number of shares authorised. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 79 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_i&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NumberOfSharesAuthorised
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 79 -Subparagraph a -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_iv&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NumberOfSharesOutstanding
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- Definition The nominal value per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 79 -Subparagraph a -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_iii&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ParValuePerShare
Namespace Prefix: | ifrs-full_
Data Type: | dtr-2022:perShareItemType
Balance Type: | na
Period Type: | instant

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- Definition Corporate information and group structure. + References No definition available. + Details
Name: | opra_CorporateInformationAndGroupStructureLineItems
Namespace Prefix: | opra_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of ordinary shares represented per share of ADS. + References No definition available. + Details
Name: | opra_NumberOfOrdinarySharesPerShareOfAds
Namespace Prefix: | opra_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=ifrs-full_OrdinarySharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |