The Consulate attests documents like power of attorney, affidavits, court papers etc.

Requirements

1. Document to be attested in original with one photocopy
2. Valid passport supported by valid visa or any other immigration document with a photocopy
3. Charges for each signature attested: C$ 16 – general attestation; C$ 32 – property matters;
   C$ 80 for commercial matters.  Fees payable to Consulate General of India, Toronto by
   Bank draft/Money Order/Certified Cheque.
4. In Person: Applicant to come in person and sign in the presence of consular officer.

or

By Mail: In case the applicant does not want to come in person or wants to get attested any document by Canadian authorities, the document can be notarised from a Notary Public and the signature of Notary Public verified from the Ministry of Government Services at 77 Grenville St. 9th Floor, Toronto , Tel: 416-325-8416 in case of residents of Ontario. Residents of other Provinces may get the verification done through Provincial Ministry of Government Services or the authority designated to do so in that Province. The notarised and counter-signed document and a photocopy along with (2) & (3) above should be mailed to the Consulate for attestation.

      5.  Time taken: Documents are attested and returned the same day.
            Mail-in applications take 3 working days upon receipt of documents.